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     Now all Chinese sellers no longer provide free plastic shopping bags. China tries to cut the use of plasticbags in order to cut energy  consumption (能源消耗) and pollution.

     "Customers are encouraged to carry their own bags," an official with the Ministry of Commerce, Men Xiaowei,said in an online interview earlier. "It is a habit revolution(改革). To cut the use of plastic bags is to protect our environment.

     "Chinese have enjoyed free plastic shopping bags for more than 10 years. Those shopping bags used to be very helpful to Chinese shoppers. However,they also caused many problems to the environment.

     Accordin8 to the National Development and Reform Commission(国家发改委) ,every two people would use at least one plastic bag one day. At least l,300 tons of oil must be used every day to produce plastic shopping bags for supermarkets alone.

     " Plastic  bags are difficult to be  degraded (降解 ) , " Men said. " Most of the daily waste came from plastic bags, " Customers have begun to pay 0. 2 yuan for small sized plastic bags and more than 10 yuan for fabric (织物)ones.

1. Why does China cut .the use of plastic bags?

2. According to the words of Men Xiaowei,using plastic bags used to be Chinese people's            .

3. How many plastic bags might be used by ten people one day in China?

4, How much should customers pay for one small-sized plastic bag?

2014年3·15的主题确定为：“新消法、新权益、新责任”。新消法实施了“七天无理由退货”制度，赋予了消费者一定的“后悔权”；规范了网络购物等新的消费方式，加大了惩罚性赔偿力度等。这可以保护消费者的

①隐私权    ②公平交易权  ③依法求偿权  ④人格尊严权

A．①③

B．②④

C．①④

D．②③

静止放在水平桌面上的西瓜，下列各力中属于平衡力的是[ ]

A．西瓜对桌面的压力和桌面对西瓜的支持力

B．西瓜对桌面的压力和桌子受到的重力

C．西瓜受到的重力和桌面对西瓜的支持力

D．西瓜受到的重力和西瓜对桌面的压力

胆囊结石最常见的并发症是

A．胆道蛔虫症
B．急性梗阻性化脓性胆管炎
C．肝脓肿
D．急性水肿型胰腺炎
E．急性化脓性胆囊炎

不要在驾驶室的前后窗范围内悬挂和放置妨碍驾驶人视线的物品。