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课时作业(二十一) [必修5 Unit 1 Great scientists] [限时：35分钟] Ⅰ.单项填空 1．—Daddy, look! Why ________ rainbow is like a bow? —Oh, it is apologizing to ________ angry sky. A．the; an B．a; / C．a; an D．the; the 2．What he says makes no ________ to me. A．care B．sense C．interest D．meaning 3．With water ________ constantly, the brave soldier jumped into the river to save the drowning villager. A．to rise B．rising C．risen D．rose 4．—Can you work out the problem? —I can't ________ you explain how to do it. A．but for B．except C．apart from D．unless 5．The State Council has ________ a new economic policy on the benefits of the farmers. A．put up B．put forward C．put off D．put out 6．________providing humanitarian aid, the UN is also supposed to enforce(实施) agreements. A．Apart from B．Rather than | 
