The government is _____ and will take the necessary steps to maintain security a
题型：不详难度：来源：
The government is _____ and will take the necessary steps to maintain security and stability.| A．on the alert | B．out of control | C．on guard | D．in vain |
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答案
| A |
解析
| on the alert (="alert;" watchful; careful) 警惕，小心：Drivers must be on the alert for traffic signals. (="Drivers" must be especially careful to see signals when driving a car.) (司机必须密切注视交通信号。) out of control 失去控制；on guard站岗；in vain 徒劳，无效。 |
举一反三
Russia"s withdrawal of its experts from China did not strangle (压垮) the Chinese people; _____ it stirred up their enthusiasm for greater exertions.| A．on the other hand | B．on the contrary | C．to the contrary | D．in consequence |
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_______environmental issues, the government will enforce existing regulations.| A．Regards | B．As | C．For | D．As regards |
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Most Americans would prefer to keep their problems ______ themselves, and solve their problems ______ themselves. | A．to; by | B．by; to | C．for; to | D．in; on |
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The chances of discovering life on Neptune are about a million _____.| A．at one | B．for one | C．to one | D．against one |
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When the entire class worked together they finished the project _____.| A．in no way | B．in no time | C．on no account | D．in no case |
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