题干

下列运动状态中,物体处于平衡状态的是(   )

A:蹦床运动员上升到最高点时

B:荡秋千的小孩摆到最低点时

C:与倾斜的、匀速传动的传送带保持相对静止的货物

D:宇航员费俊龙、聂海胜乘坐“神舟六号”进入轨道做圆周运动时

上一题 下一题 0.0难度 选择题 更新时间:2019-03-30 05:37:38

答案(点此获取答案解析)

C

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Tuesday,13th September

    I arrived in New York two weeks ago.I am writing my diary(日记)in English because my English teacher Rachel says it is a good way to practise English.So far, I like New York and my school.I have three classes a day.Most of my classmates come from Japan,South Korea,Spain,Germany and Australia.There aren't many Chinese students.so I have to use English most of the time.I am learning a lot!I am living in student housing,and I have my own comfortable room.

Thursday.20th October

    My English is hopeless!I was on the bus this morning and a man spoke to me,but I couldn't understand him.I was so embarrassed(尴尬的).Why is my English improving so slowly?I want to make lots of American friends,but this isn't happening so easily.I'm a shy girl.It is hard for me to talk to some people,even my classmates!I like them,but sometimes I can't understand them very well.I think I'm feeling homesick(想家的).I miss my friends and family.

Thursday.27th October

    I went to a school party last Friday and it was great.I talked with a Japanese boy named Kenji,a German girl named Wendy and an Italian girl named Carla.We talked about our countries' customs (风俗)and our experiences in America so far.We are going to walk around New York together this weekend.Also, Kenji wants me to write for the student newspaper here at school.Maybe things are getting better!

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