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【判断题】
如果将NaOH及NH 3 ·H 2 O溶液均稀释一倍，则两溶液中c（OH - ）均减小到原来的二分之一。A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】若变量 i,j 已经定义为整型,则以下程序段中循环体执行的次数是: for(i=5;i>0;i--) for(j=0;j<4;j++) { 循环体语句 ;}
A.
20
B.
25
C.
30
D.
一次也不执行
【单选题】Chinese friends give each other more help than those in English-speaking countries.
A.
people in English-speaking countries are cold
B.
the Chinese think the friend of a friend is also our friend
C.
people in English-speaking countries have a smaller circle of friends
【单选题】Joseph: Does Luis speak English well?Keith: No, __________. His English is still poor.
A.
he not
B.
he isn't
C.
he doesn't
【单选题】Zoe: _______ are yours? Ana: The English newspapers are mine.
A.
Which newspapers
B.
Whose newspapers
C.
Which newspaper
【单选题】In many countries in the world, breakfast is a snack ________ a meal, but the traditional English breakfast is a full meal. [ ]
A.
other than
B.
more than
C.
rather than
D.
less than
【单选题】以下程序中,for循环体执行次数是()。 main() {int i; for(i=0;i<10;i++) {if(i<1) continue; if(i==5) break; } }
A.
10
B.
6
C.
5
D.
无限次
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