局部感染引起全身损害时，可判定发生全身炎症反应综合征的是 ( )A．多个脓肿形成

Perhaps once you got free plastic bags when you shopped at the supermarket. But now things have changed already.

Since June 1, 2008, China has banned(禁止) its shops and supermarkets providing free plastic bags. Shoppers have to pay for bags if they need them. “We hope it will encourage people to use cloth bags and baskets for their vegetables,” said a spokesman from the Chinese government. “Plastic bags have led to a big waste of energy and on the other hand, they pollute(污染) the air, rivers and soil. It takes around 1000 years for the bags to break down. They are also dangerous to wildlife, which eats them without knowing.”

A large number of Chinese people have begun to make their own cloth bags. Li Linwei, a student in Shenyang, Liaoning Province, made a bag out of an old dress of her mother’s. “ I have given it to my grandmother as a Mother’s Day present. From now on, she will use it when she goes shopping.” said the girl.

根据短文内容，回答下列问题。（5分）

1. Since what time, supermarkets have been stopped from providing free plastic bags?

2. Without free plastic bags, what will people use when they go shopping according to the passage?

3. Do plastic bags pollute the environment?

4. How long will it take the plastic bags to break down?

5. What present did Li Linwei give her grandmother on Mother’s Day?

如图所示，2013年12月14日，嫦娥三号探测器的着陆器经100公里的环月轨道I上开启发动机实施变轨，进入椭圆轨道II，在15公里的近月点P开启发动机反推减速，经姿态控制，缓慢下降、悬停、自由下落后着陆成功，若已知月球表面重力加速度g和月球半径R以及万有引力常量G，则下列说法正确的是（　　）

A．嫦娥三号着陆器在变轨之后比变轨前的机械能大

B．嫦娥三号着陆器在100公里环月轨道I上的速率介于月球的第一宇宙速度和第二宇宙速度之间

C．由题干中的已知条件可以计算月球的质量和平均密度

D．嫦娥三号着陆器还可以利用降落伞来实现软着陆

我国《票据法》规定，不可以挂失支付的票据有（）。

A、未记载付款人的票据

B、无法确定付款人的票据

C、未填明代理付款人的银行汇票

D、银行本票

某钢铁公司铁矿石原料主要依赖进口，下列各项中，属于其市场风险的是( )。

A．产品风险

B．信用风险

C．流动性风险

D．汇率风险

O系统套用格式或套用报表模板后，原有的数据是否丢失？（）

A.不丢失；

B.丢失；

C.UFO系统可以进行设置；

D.可能丢失也可能不丢失；