2012-2013学年江苏省盐城市盐都区七年级下学期期中考试生物试卷（带解析）
※题型：单选题※知识点：单选题※试题难度：容易<br>人的生命是宝贵的,新生命诞生的起点是()<br><tbody><br>A.精子成熟<br>B.卵子成熟<br>C.胎儿出生<br>D.精卵结合<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/7039B1414292C98C4C0586321B67CF33.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/9DBD082E6B8D9AA4A6E6A07FBF48CA9F.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>胚胎发育的营养,主要依靠()<br><tbody><br>A.胎儿<br>B.胎盘<br>C.卵巢<br>D.输卵管<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/E7D3E85673EFE9CB95D8D96898399586.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/7ED25A75B4E043A481B8BF9DAEBEBF96.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>第二性征(如男子长胡须、女子胸部发育)的出现与何种激素的作用直接有关()<br><tbody><br>A.生长激素<br>B.性激素<br>C.甲状腺激素<br>D.胰岛素<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/E7D3E85673EFE9CB95D8D96898399586.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/BE45893F673BA5342DD0459DDBB0A6D8.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>青春期心理卫生应做到()<br><tbody><br>A.正确对待自己出现的身心变化<br>B.树立远大理想,培养高尚情操<br>C.开展正常的人际交往,做到自尊自爱<br>D.以上都对<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/7039B1414292C98C4C0586321B67CF33.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/254F379B08D903F1F1C3B30A95E7A4C2.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>动物尸体火化后,剩下的骨灰主要是<br><tbody><br>A.无机物<br>B.有机物<br>C.无机物和有机物<br>D.炭黑<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/8B0030C365994090B8FC9AF4C183A80B.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/B7FA181D1771ADD0821A5349035FAB5B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>用纱布包着面团放人盛有清水的烧杯中用手揉挤,纱布内原来的面团变成一种黄白色的胶状物质,水也变混浊了,水中主要含<br><tbody><br>A.蛋白质<br>B.淀粉<br>C.脂肪<br>D.维生素<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/E7D3E85673EFE9CB95D8D96898399586.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/64C47CC6BC1ED210AA27959DFA5AB1F4.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>某校餐厅炊事班的师傅为学生设计了一份午餐食谱：米饭、清炖排骨、麻婆豆腐。生物老师认为这一食谱营养不够均衡，你认为加上下列哪种食物后这份食谱就会变得更为合理<br><tbody><br>A．素炒豆角<br>B．牛奶<br>C．红焖牛肉<br>D．炒鸡蛋<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/7A3FAFE53B29F005E2BB3B89B4B8957C.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/B2189870194E8D3E5BBBC5F82E46ECCC.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br><tbody><br>下列生活习惯,容易形成龋齿的是<br><div[ ]<br>A.饭后漱口、早晚刷牙 <br>B.多吃甜食 <br>C.喜欢喝牛奶,多吃肉类 <br>D.多吃含维生素的食物<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/E7D3E85673EFE9CB95D8D96898399586.png"><br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：较易<br>唾液淀粉酶消化淀粉的最佳温度是<br><tbody><br>A．30℃<br>B．35℃<br>C．37℃<br>D．40℃<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/64DDD180D6E89D9CCE7D00D7A48A4D0B.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/433949ED4E0D6ED03EFB5092EDA4B232.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>在下列消化液中,同时含有淀粉酶、蛋白酶和脂肪酶的是<br><tbody><br>A.胰液和肠液<br>B.胃液和肠液<br>C.肠液和胆汁<br>D.胆汁和胰液<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/8B0030C365994090B8FC9AF4C183A80B.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/3023419DB0DE3614F112364A83BC48B0.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>有些对胃刺激性较强的药物,通常都是装在用淀粉制成的胶囊中。这样做的好处是( )<br>A.病人用药时,容易吞咽<br>B.能减缓药物对胃的刺激<br>C.保证药物全部进入小肠<br>D.抑制药物的吸收和药效<br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/31C054CCACB328ED2E562B350B130EB6.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>在人体的消化器官中,胃能吸收的物质是()<br><tbody><br>A.葡萄糖<br>B.水<br>C.氨基酸<br>D.蛋白质<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/E7D3E85673EFE9CB95D8D96898399586.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/8C73D5D04D91E583646232FAFF8F6CAA.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>如图是人体消化系统结构图，消化吸收的主要场所是<br><imgsrc="https://picture1.zhihuicn.com/2/4B17695D0C9E7DF9434623F5A576D0AD.jpg"><br>style="vertical-align:middle;VERTICAL-ALIGN:middle;"><br><tbody><br>A．A<br>B．B<br>C．C<br>D．D<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/6BF4F989954415437ACD8671F41DB7C7.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/91B6FD774396E2D54F92A70719E1BAED.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>下列哪项,值得我们学习()<br><tbody><br>A.不吃早餐去上学<br>B.做一个素食者<br>C.按时就餐<br>D.暴饮暴食<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/924B3E38A9B17011DDBB929C9A570330.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/ADF0B10F934A33AD3D2545C3609A13D7.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>用你所学的知识,为你的父母设计一份营养餐时,一定要考虑下列哪些因素( )<br>A.均衡搭配五类食物 B.考虑父母的身体状况<br>C.考虑食物的种类、营养成分、价格 D.以上都对<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2014/83ff1d7e20a6420e872f3f8608aa2b2d/01A39E48B8A67989A23F6887F26FCC64.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2014/a1829fcff8b6428c9bfafd1adea486a6/B0448966F6B598B5189E6A1946DFD48E.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>血浆成分中含量最多的是<br><tbody><br>A.葡萄糖<br>B.血红蛋白<br>C.无机盐<br>D.水<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/7039B1414292C98C4C0586321B67CF33.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/DD7A3869880F71003FB2494F061CA497.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>防止血液凝固的方法是( )<br>A.不断振荡 B.在血液中加入少量柠檬酸钠溶液<br>C.在血液中加入0.7%的氯化钠溶液 D.置于热水中<br>答案<br><img src="https://picture2.zhihuicn.com/answer/2/9/2013/5b9cdc4f323741018c9d2afc5412996a/76900E09FAB5EBA344B8EA84E844FF07.png"><br>解析<br><img src="https://picture2.zhihuicn.com/explain/2/9/2013/4774eace7f80463e89519a7cdfd683a1/E9BCB089EE8218DCB23AF4C7AE89BBF7.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>三种血细胞中,都不具有细胞核的是()<br><tbody><br>A.成熟的红细胞和白细胞<br>B.白细胞和血小板<br>C.成熟的红细胞和血小板<br>D.上述三组都无细胞核<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/924B3E38A9B17011DDBB929C9A570330.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/1557A99F64A7713BB352336B4430F4B3.png"><br><br>※题型：单选题※知识点：单选题※试题难度：较易<br>AB型的人的血可以给哪种血型的人输血<br><tbody><br>A．O型<br>B．AB型<br>C．A型<br>D．B型<br></tbody><br><br>答案<br>略</br>解析<br>略<br>※题型：单选题※知识点：单选题※试题难度：中等<br>一个急性肠胃炎患者到医院做血常规化验,你预测下列哪项会增多()<br><tbody><br>A.红细胞<br>B.白细胞<br>C.血红蛋白<br>D.血小板<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/E7D3E85673EFE9CB95D8D96898399586.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/B74861412F2F02CB9CE592BD3108C594.png"><br><br>※题型：单选题※知识点：单选题※试题难度：容易<br>如图是血液与组织细胞之间的物质交换示意图,请你对照三种血管特点,来辩认此时参与物质交换的是()<br><tbody><br>A.动脉<br>B.静脉<br>C.毛细血管<br>D.无法确定<br></tbody><br><img src="https://picture1.zhihuicn.com/2/5F6D1F2C195428ABCC78F6B65139B041.png"><br>style="VERTICAL-ALIGN:middle"><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/924B3E38A9B17011DDBB929C9A570330.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/02F602A92C97972BE2380426FC7B382B.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>血液从左心室射出后,经过体循环回到右心房之前,不可能流经()<br><tbody><br>A.肾静脉<br>B.肺静脉<br>C.上腔静脉<br>D.主动脉<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/E7D3E85673EFE9CB95D8D96898399586.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/ACF2CA5521AB60BD199D8C52ABB8D345.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>静脉血和动脉血比,主要不同之处是<br><tbody><br>A.含营养物质少<br>B.含代谢终产物多<br>C.含氧少<br>D.在静脉<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/924B3E38A9B17011DDBB929C9A570330.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/EED6609E26AF8E09AE60E9E190AFA2DB.png"><br><br>※题型：单选题※知识点：单选题※试题难度：中等<br>人在平静状态时,完成吸气动作需要<br><tbody><br>A.肋间外肌收缩,膈肌收缩<br>B.肋间外肌舒张,膈肌舒张<br>C.肋间外肌收缩,膈肌舒张<br>D.肋间外肌舒张,膈肌收缩<br></tbody><br><br>答案<br><img src="https://picture1.zhihuicn.com/Answer/2/9/8B0030C365994090B8FC9AF4C183A80B.png"><br>解析<br><img src="https://picture1.zhihuicn.com/Explain/2/9/D9A15FE77F18E4F6D8D100E7B5C6049E.png"><br><br>
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