汽油供给系统的功用是利用电动汽油泵向喷油器提供足够压力的汽油，（）再根据来自ECU的

John lives on a farm. The farm is not very big. His parents grow rice and corn. They don’t use animals to do farm work any more. Today they use a tractor(拖拉机). It works faster and better. After he does his work in the fields, he likes to sit and look at the blue sky and the green hills. He thinks the country is more beautiful than the city. In the city, he can’t hear the animals. In the country, he can hear birds singing. He likes to play with his dog, Cody. Cody is a very interesting dog. He likes to follow people. When they stop, he stops.

When they walk, he walks. John thinks Cody is the best dog of all.

小题1:John’s parents are ________.

A．workers

B．teachers

C．doctors

D．farmers小题2:They use a tractor to _______.

A．carry rice and corn

B．carry animals

C．help to do farm work

D．drive to town小题3:What does John do after his work?

A．He sit down and looks at the blue sky and the green hills.

B．He goes shopping in the tractor in town.

C．He helps his parents with some more farm work.

D．He walks his dog in the fields.小题4:John likes to live in the country because ______.

A．he can live on their crops

B．he can hear the animals

C．he can play with his dog

D．he thinks the country is more beautiful than the city小题5:John’s dog is very ______.

A．lazy

B．well

C．funny

D．boring

下列关于动物在自然界中的作用叙述，不正确的是（　　）

A．动物在生态平衡中起着重要作用

B．动物能促进生态系统中的物质循环

C．动物的数量越多，对植物的生长越有利

D．动物能帮助植物传粉、传播种子，有利于植物的繁殖

使用模板台车进行全断面衬砌时，做法错误的是（）

A、台车距开挖面的距离不得小于200m。

B、混凝土灌筑时，必须两侧对称进行。

C、台车上可以堆放料具，工作台应满铺底板，并设安全栏杆。

软件开发项目管理人员所需要的软件开发工具主要是______

A．计划工具
B．分析工具
C．设计工具
D．编程工具

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