81÷4所得的商是□,余数是□,□分别应选择[ ]
A.2
B.1
C.20
D.10
C,B.
用适当的介词填空。
1. We go to school _______ weekdays.
2. What time do you get up _______ Saturday morning?
3. Mr. Green likes working _______ China.
4. That's a delicious cake. I can have it _______ supper.
5. Don't worry. Bus station is _______ from the bank.
6. Is he in Japan _______ his father?
7. The students go to school _______ Monday _______ Friday.
为了使模块尽可能独立,要( )。
A.模块的内聚程度要尽量高,且各模块间的耦合程度要尽量强
B.模块的内聚程度要尽量高,且各模块间的耦合程度要尽量弱
C.模块的内聚程度要尽量低,且各模块间的耦合程度要尽量强
D.模块的内聚程度要尽量低,且各模块间的耦合程度要尽量弱