These problems, __________, will seriously affect the growth of teenagers and ev
题型：不详难度：来源：
These problems, __________, will seriously affect the growth of teenagers and even the nation’s future. | A．solved properly | B．if solved properly | | C．not if properly solved | D．if not solved properly |
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答案
| D |
解析
| 考查状语从句的省略。if not solved properly，if后省略了they are 。 |
举一反三
Only when one leaves his homeland ______ how much he loves his motherland.| A．he will realize | B．will he realize | C．has he realized | D．he has realized |
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The experiment shows that proper amounts of exercise, if regularly, can improve our health. | A．being carried out | B．carried out | | C．carrying out | D．to carry out |
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_____________ late, but also he forgot his books.| A．Not only did he turn up | B．Not only he turned up | | C．Not only did he turn out | D．Not only he turned out |
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Not until ___ on TV ___ that the Chinese was rescued by the European Union Task Force.| A．did I turn; did I know | B．did I turn; I knew | | C．I turned; did I know | D．I turned; I had know |
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_______ let fake products become uncontrolled in the market.| A．In certain circumstances we can | | B．In no circumstance can we | | C．Under any circumstances we can | | D．Under no circumstances can we |
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