（）的发现证实了黑洞的存在。A、超新星B、中子星C、星团D、X射线双星

任务型阅读

Pollution problems are becoming more and more serious. One of them is called “white pollutions” caused by plastic, such as shopping bags, boxes and cups. In China, about three billion plastic shopping bags are used every day, which results in a great waste of resources(资源) and heavy environment pollution. Luckily, the government has stopped us from using free plastic bags, telling all stores and supermarket not to provide customers(顾客) with free plastic bags since June 1,2008. From then on, people have been supposed to use cloth bags and shopping baskets instead of plastic bags in order to protect our environment.

Now, more and more people have realized the importance of using the cloth bags and shopping baskets. For one thing it can protect our environment, for another it can also save energy. Yet we have more things to do to solve the problem of “white pollution”!

小题1:Is “white pollution” caused by plastic?

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小题2:How many plastic shopping bags are used every day in China?

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小题3:What are the advantages of using cloth bags or shopping baskets？

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下列国家中，有赤道穿过的是[ ]

A．澳大利亚        

B．阿根廷        

C．扎伊尔    

D．巴西

福建、广东、台湾主要生产制做的茶类是（）。

A、绿茶

B、乌龙茶

C、黄茶

D、红茶

拆除接地线应（）。

A.先拆导体端

B.后拆接地端

C.后拆导体端

D.先拆接地端

神经节阻滞药因同时阻滞副交感神经，可引起（）

A.心动过速

B.瞳孔散大

C.睫状肌麻痹

D.胃肠运动减弱

E.尿潴留