一根2m长的绳子，截去14后，再接上余下的14，这时绳子短了2m．___爱下问搜题

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问题解答题

一根2m长的绳子，截去

1

4

后，再接上余下的

1

4

，这时绳子短了2m．______．

答案

2×

1

4

=

1

2

（米），

2×（1-

1

4

）×

1

4

，

=

3

2

×

1

4

，

=

3

8

（米）；

1

2

-

3

8

=

1

8

（米）；

比原来短了

1

8

米．

所以题干的说法是错误的．

故答案为：错误．

完形填空

补全对话
A: Hi, Jane. 小题1:_________________________?
B: I went to Penang in Malaysia.
A: Who did you go with?
B：小题2:_____________________________.
A: What did you do?
B: We went to the beach in the morning. 小题3:___________________________.
A: Sounds great!
B: 小题4:_____________________. We went to Penang Hill, but the weather was really bad and rainy. We were wet and cold. 小题5:______
A: Oh, that’s really terrible.

A. But the next day was not as good.
B. I played with my best friend.
C. Where did you go on vacation?
D. Because we forgot to bring an umbrella.
E. Did you go to Penang on your vacation?
F. I went with my family.
G. Then in the afternoon, we rode to Georgetown.

填空题

并发控制是对用户的______加以控制和协调的。