在下图所示的三种情况中，砝码的质量均为M，不计一切摩擦和弹簧秤的重力，则三个弹簧

He knows even (little) ______ about the Olympic Games than I do.

A school bus is one that is used to take children to and from school.

In the USA, about 450,000 school buses take more than 25 million children to and from school. The yellow school bus is a US icon (象征). Yellow became the color of school buses in the USA in 1939. Dr. Frank got the good idea. He said it was easy for people to see yellow buses and the black letters on them in early morning or late afternoon. That would make children safer.

There are not many school buses in Britain, and they are not yellow. They have trackers (追踪器) on them, so kids are being tracked while they travel to and from school by bus. The trackers let parents know where the school bus is and whether their kids are on the bus.

Kindergarten (幼儿园) is a difficult time for some kids. It's the first time for them to go away from their parents. To make kids love their school, Japanese kindergartens and schools have colorful buses. The buses can easily make children want to take them--and then, go to school. Even some parents want to take them, too!

School buses are becoming more and more popular in China now.  It saves a lot of time for students to take a school bus. It's said that there will be 3,000 yellow school buses on the road by the end of this year in Chongqing.

小题1:According to Dr. Frank,           school buses are safer for the students.

A．yellow

B．black

C．white

D．colorful小题2:Children in Japan may easily         by taking the school bus.

A．save time

B．love their school

C．play games

D．do their homework小题3:Chinese students will save a lot of time to         to school.

A．walk

B．take a taxi

C．ride a bike

D．take a school bus小题4:This passage is mainly about         .

A．school buses

B．school life

C．popular colors

D．students' safety

设f（x）连续，且满足，则f（x）=（）。

A.

B.

C.

D.

非法吸食麻醉药品的，应（）.

A．由其所在单位给予行政处分 

B．由公安机关依照治安管理处罚条例或有关的规定给予处罚 

C．由司法机关追究刑事责任 

D．没收全部麻醉药品和非法收入，并视情节给予罚款等处罚 

E．以生产、贩卖毒品罪论处

教育法律救济的主要方式是（）。

A．司法救济

B．行政救济

C．仲裁

D．调解