Comeandhavealook________theants.[ ] A.in

钱币蕴藏着丰富的历史信息。下列货币按出现的先后顺序，排列正确的是

①秦半两
②开元通宝
③乾隆通宝
④交子

A．①②③④B．①③②④C．①②④③D．②①④③

阅读理解。

     Every day in China, about 200 million children go to school. Many of them take school buses.

What should we do to keep these students safe on the road?

     On April 5, the State Council (国务院) published new rules about school bus safety. These new

rules are stricter than the old ones.

      Under the new rules, local governments must make sure that students go to nearby school or

boarding (寄宿的) schools to reduce traffic risks (风险). Also, local governments must help kids in

the countryside reach their school buses.

      From now on, school buses have a speed limit (限制) of 80 km/h on highways and 60 km/h on

normal roads. While on the road, other cars must let school buses go first.

     The new rules also say that school buses must never be overloaded (超载的).

     There are many other rules as well. A school bus must have more than seven seats. On each bus,

there must be at least one adult to keep an eye on the kids. Each school bus must have a fire extinguisher (灭火器), a first aid kit (急救箱) and a GPS.

     Last year, a series of school bus accidents happened in China. To stop such accidents, the Central

Government decided to strengthen (加强) the rules for school buses.

     The most serious accident happened in November in Gansu, When a nine-seat minibus crashed

(碰撞). There were 62 children inside, and 21 of them died.

1. What did the State Council publish on April 5?

A. New rules about school bus safety.      

B. New rules about student safety.

C. New rules about student home.        

D. New rules about class.

2. Under the new rules, which of the following is NOT true?

A. School buses can go first when there are other cars.          

B. School buses must drive 80km/h or less on highways.  

C. School buses must drive 80km/h or less on normal roads.

D. School buses must have at least one adult to look after the kids.

3. According to the new rule, a school bus must have the following EXCEPT       .

A. a GPS                        

B. more than seven seats  

C. a parent of one the students      

D. a fire extinguisher and a first aid kit

4. According to the passage, the government made new rules because       .  

A. 21 students died in school bus accidents last year  

B. School buses in China were not safe enough before

C. 200 million children in China go to school by bus every day  

D. the government encourages all students to take school buses  

5. What is the best title of this passage?

A. The most serious accident happened in November in Gansu.  

B. A school bus must have more than seven seats.     

C. Local governments must help kids.

D. Safety first on the bus.

钢结构工程施工中的预变形和预拼装分别是指什么？

盐酸是强酸，能强烈地腐蚀金属、衣物，应密封保存。

下列关于科学研究的方法说法正确的是（）。

A.观察，提出假说，根据假设做预期，实验检验

B.选择问题，提出理论，根据假设做预期，实验检验

C.观察，提出假说，实验检验

D.提出假说，根据假设做预期，实验检验，提出理论