定期监测即导航设备定期校验，两者互通。

与肝硬化的发生相关的微生物是（）

A.金黄色葡萄球菌

B.草绿色链球菌

C.柯萨奇病毒

D.乙型肝炎病毒

E.A族链球菌

在探究功与速度变化的关系的实验中得到如图1所示的纸带，纸带与小车相连且足够长，由图可知纸带上的间距明显不均匀，右端间距小，左端间距大，下面的分析和判断正确的是(      )

A．若左端与小车相连，可能平衡摩擦力时，木板倾斜度太大

B．若右端与小车相连，可能平衡摩擦力时，木板倾斜度太大

C．若左端与小车相连，可能小车有一定的初速度，实验前忘记平衡摩擦力或没有完全平衡摩擦力

D．若右端与小车相连，可能小车运动前忘记或没有完全平衡摩擦力

阅读理解。

      Believe it or not, optical illusion (错觉) can cut highway crashes.

     Japan is a case in point. It has reduced automobile crashes on some roads by nearly 75 percent

using a simple optical illusion. But stripes, called chevrons (人字形), painted on the roads make drivers

think that they are driving faster than they really are, and thus drivers slow down. Now the American

Automobile Association Foundation for Traffic Safety in Washington D.C. is planning to repeat

Japan's success. Starting next year, the foundation will paint chevrons and other patterns of stripes

on selected roads around the country to test how well the patterns reduce highway crashes.

     Excessive (too great) speed plays a major role in as much as one fifth of all fatal traffic accidents,

 according to the foundation. To help reduce those accidents, the foundation will conduct its tests in

areas where speed-related hazards (danger) are the greatest curves, exit slopes, traffic circles, and bridges.

Some studies suggest that straight, horizontal bars painted across roads can initially cut the average speed

of drivers in half. However, traffic often returns to full speed within months as drivers become used to

seeing the painted bars.

     Chevrons, scientists say, not only give drivers the impression that they are driving faster than they

really are but also make a lane appear to be narrower. The result is a longer lasting reduction in highway

speed and the number of traffic accidents.

1. The passage mainly discusses _______.

A. a new way of highway speed control

B. a new pattern for painting highways

C. a new way of training drivers

D. a new type of optical illusion

2. On roads painted with chevrons, drivers tend to feel that _______.

A. they should avoid speed-related hazards

B. they are driving in the wrong lane

C. they should slow down their speed

D. they are coming near to the speed limit

3. The advantage of chevrons over straight, horizontal bars is that the former _______.

A. can keep drivers awake

B. can cut road accidents in half

C. will look more attractive

D. will have a longer effect on drivers

4. The American Automobile Association Foundation for Traffic Safety plans to _______.

A. try out the Japanese method in certain areas

B. change the road signs across the country

C. replace straight, horizontal bars with chevrons

D. repeat the Japanese road patterns

甲购买手机一部，交给同事乙保管。乙将该手机赠予了其朋友丙，丙受赠时并不知道手机不为乙所有，后小偷将此手机偷走了。则手机应该归( )。

A．甲
B．乙
C．丙
D．小偷

李某与于某签订了房屋租赁合同，李某租用于某的房屋，合同履行期间，于某又将出租房屋出售给王某，王某因急需利用此房经营，要收回李某租用的房屋，那么，下述表述错误的有( )。

A．李某与于某之间的租赁合同因出租房屋所有权变更而自动失效

B．李某与王某之间的买卖合同因房屋承载租赁合同而无效

C．因租赁合同期间未满，王某尚未取得房屋的所有权

D．李某有权继续租赁承租的房屋直到租赁合同期满

E．李某无权继续租赁承租的房屋