活塞上的防砂槽有什么作用？

A new school term begins, Is anything new at your school? Sichuan students are getting an extra (额外的)hour to sleep in the morning.

This year, Sichuan schools decided that students should start classes later. This should help them feel less tired, For Junior high schools, the first classes will begin no earlier than 8:30 am.

The changes have made students happy.

Liu Xian, 15, said his class was excited by the news on the first day of school. “It’s so good we can get up later!” said Liu.

Liu studies in Chengdu No.4 Middle School. He used to get up at 6:40 am. Now he can get up at 7:40 am because class doesn’t start until 8:40 am.

Wu Hongli, 15, said the new timetable is good for her health. “I used to drink coffee every night or I would feel to sleepy to finish my homework, ”said Wu. “Now I can finish it without coffee.”She used to get up at 6:30 am. Now she can get up at 7:30 am.

Wu Hongli’s mother was happy, too. She thought more sleep would help her daughter grow taller.

But some parents worried that more sleep would mean less learning. There used to be five classes in the morning. Now there are only four.

Many teachers, though, say the changes will help students learn better.

“Students used to doze(瞌睡)for the first two classes in the morning,”said Wu Zongping, an English teacher at Chendu No.12 Middle School. “But now they look fine and they learn much better than before.”

小题1:What made the Sichuan middle school students happy?

A．The new school term began.

B．Their schools took on a new look.

C．They felt a little bit tired.

D．They could get up later.小题2:In the new term, the first class in the morning in middle schools started at about          .

A．7:00

B．7:30

C．8:00

D．8:40小题3:Why was Liu Xian excited at the news on the first day of school?

A．There were many changes in his school.

B．He could sleep one more hour in the morning.

C．He could study in Chengdu No.4 Middle School.

D．He would have only five classes in the morning.小题4:What did the teachers think of the changes of the school timetable?

A．They didn’t like the changes.

B．They could use the timetable more easily.

C．They spoke highly of the changes.

D．They looked fine when they taught.

下列关于驱动桥的叙述正确的有（）。

A、它是传动系最后一个总成

B、将万向传动装置输入的动力降速增扭

C、改变由万向传动装置输入的动力方向

D、保证左右驱动轮以相同的转速旋转

智能业务记费在话单中的时间依据点是（）

A.SCP时间

B.SSP时间

C.由SSP和SCP共同承担

D.SSP或者SCP时间

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