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问题 单项选择题 A1型题

可能引起二重感染、再生障碍性贫血和灰婴综合征的抗生素是（）

A.灰黄霉素

B.二性霉素

C.四环素

D.制霉菌素

E.氯霉素

答案

参考答案：E

解析：氯霉素可引起二重感染、再生障碍性贫血和灰婴综合征。

完形填空

根据短文内容及首字母提示，填写所缺单词。

Have you ever heard of Dididache? Dididache (嘀嘀打车), a taxi-hailing smartphone app（应用程序）which is believed to be created by Tencent, has recently a 小题1:  in Xiamen, and more than 700 taxi drivers in the city have used the app.

The app s小题2:  the real-time locations of taxis on a map using the GPS technology and makes it possible for users to hail (招呼) a taxi on their smartphones. The u小题3:  request will be sent to the nearest taxi drivers who will decide w小题4: to accept the order or not.

Taxi-hailing apps are very p 小题5:  in Beijing, Shanghai, Hangzhou and Nanjing, having gained tens of thousands of users. H 小题6: , the city’s taxi-control departments doubt its helpfulness and have said it may not be s 小题7: for Xiamen.

The app has been criticized (指责) for disturbing market order, and creating d小题8:  for passengers who do not use the app to hire a cab. Many users complain that they are only useful when most taxis are idle (空驶), and hiring a taxi can still be challenging during bad w小题9: and rush hours. Can this app be in use for long? Technology might make a great d 小题10: to our life. Let’s wait and see.

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单项选择题

允许船舶在批准的区域内排放含油污水的时间的（）。

A、平潮时

B、退潮时

C、涨潮时
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