一号线地铁列车在客室门未关闭或锁紧时，启动电子门控器，车门将自动关闭。

Read and answer. （读句子，按要求回答问题）

1. Is this a garden?（肯定回答）

______________________________________________________________

2. Are they sheep?（否定回答）

______________________________________________________________

3. Do you have a dress?（肯定回答）

______________________________________________________________

4. Do you have a library?（否定回答）

______________________________________________________________

5. Are they cows?（肯定回答）

______________________________________________________________

某旧住宅，测算其重置价格为40万元，地面、门窗等破旧引起的物质折旧为1万元，因户型设计不好，没有独用厕所和共用电视天线等导致的功能折旧为6万元，由于位于城市衰落地区引起的经济折旧为3万元，该住宅的现值为( )万元。

A．30

B．31

C．36

D．40

起泡的原因很复杂，但均和气体有关，（）易产生氧化泡。

A.高火炉温过高

B.小火炉温过高

C.临界温度偏高

D.预热带升温过慢

C

Everyone needs friends. There is an old saying, “Friends are God’s way of taking care of us.” But how do you find real friendship and keep it?

The American writer Sally Seamans tells young students some smart ways to find friends. Sally says finding friendship is just like planting a tree. You plant the seed(种子) and take care of it to make it grow.

First, you should choose a friend. What makes a good friend? It is not because a person has money or good looks. A good friend should be kind and patient(耐心). For example, if you have a bad day, a good friend should listen to your complaints and do his best to help. To make a good friend, you cannot be too shy. You should make each other happy and share your lives.

But things cannot always be happy. Even the best friends have fights. What should you do when you have a fight with your friend? You have to talk to him or her. When there is no one around, have an honest talk. If he or she doesn’t want to talk, you could write a letter.

There are three steps to being friends again:

Tell him or her how you are feeling; say what your friend has done wrong, and explain why you did this or that. Remember that friendship is the most important thing in your life.

49  Sally wants to tell students the ways to_____.

A  find friends       B  plant trees         C  get happy          D  keep fit

50  What makes good friends? A good friend should_____.

A  be lovely and cool                         B  be kind and patient

C  have lots of money                         D  have good looks

51  According to the text, you can________your friend after a fight.

A  buy a present for                                  B  never say a word to

C  have dinner with                                   D  write a letter to

52  What is the best title of the text?

A  Teenagers and friendship.                        B  The good friends around you.

C  The trouble of growing up.                          D  The care and keeping of friends.

某船海上航行时观测涌浪，当船舶第一次下沉到波谷时按下秒表，至第11次下沉至波谷时秒表读数为22秒，则涌浪的视周期为（）

A.1.7秒

B.2.0秒

C.2.2秒

D.6.0秒