2004年10月某日上午,中国首颗业务型静止轨道(即同步轨道)气象卫星--“风云

题型:选择题

问题:

2004年10月某日上午,中国首颗业务型静止轨道(即同步轨道)气象卫星--“风云二号”由“长征三号甲”运载火箭成功送入预定轨道.下列关于这颗卫星在轨道上运行的描述,正确的是(  )

A.速度介于7.9 km/s~11.2 km/s

B.周期大于地球自转周期

C.处于平衡状态

D.加速度小于地面的重力加速度

考点:人造地球卫星万有引力定律的其他应用
题型:选择题

阅读理解。

     Mr. Smith gave his wife money every Friday evening. His wife always spent it all before the next

Wednesday, so that for the next three days she had no money to spend at all. One day Mr. Smith

asked her, "But how did you spend all that money?" She answered, "I don't know." So one Friday

evening, Mr. Smith gave her money together with an exercise book and a pencil. He said to his wife,

"Please write down how you spend the money." Next Tuesday, his wife had no money again. Mr.

Smith took the exercise book to see how she had spent it. "I have done what you told me," she said

gladly.  She had written: "Friday, I got 18 pounds from Mr. Smith." on the first page, and on the second

page, she wrote, "Tuesday, I have spent it all."

1. Mrs. Smith always spent all the money ________.               

A. the next day                

B. in four days

C. in a week                  

D. on next Wednesday

2. Mr. Smith gave his wife an exercise book and a pencil and asked her to ________. 

A. do homework

B. have a look

C. write down how she spent the money

D. draw a picture on it

3. Mrs. Smith was ________ to do what Mr. Smith asked her to do. 

A. happy      

B. sad        

C. sorry      

D. excited

4. Mr. Smith gave his wife money ________ a week.              

A. once      

B. twice      

C. three times      

D. four times

5. The story tells us that Mr. Smith was not very ________.   

A. glad      

B. tall       

C. careful    

D. good

题型:选择题

一家商场开展假日酬宾活动,凡购物100元(不足100元不计)回赠35元现金。现有260元钱,最多能买到(  )元的物品。

题型:选择题

下列是小强同学设计的“家庭小实验”方案,其中可行的是            

A.用空塑料瓶、小卵石、石英沙、活性炭、膨松棉等制作简易净水器

B.将铅笔芯粉末放入锁芯,使锁开启更灵活

C.向洗净的碎鸡蛋壳中加入食盐水制二氧化碳

D.用植物油、面粉和水配制溶液

题型:选择题

人的全面发展就是人的平均发展。

题型:选择题

从加工方法看,味美思酒属于()。

A.原汁葡萄酒

B.含气葡萄酒

C.强化葡萄酒

D.加料葡萄酒

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