若a和b均是整型变量，以下正确的switch语句是【】 A: switch (a/b) <br/>{ case 1: case 3.2: y=a+b; break ;<br/>case 0: case 5: y=a-b;<br/>} B: switch (a*a+b*b); <br/>{case 3:<br/>case 1: y=a+b; break ;<br/>case 0: y=b-a; break; } C: switch a <br/>{default : x=a+b;<br/>case 10 : y=a-b;break;<br/>case 11 : y=a*d; break;} D: switch(a+b)<br/>{case 10: x=a+b; break;<br/>case 11: y=a-b; break;<br/>}

在横线里填上“＞”、“＜”或“=”．当a______1时，3.2÷a＞3.2当a______1时，3.2÷a＜3.2当a______1时，3.2÷a=3.2当a______3.2时，a÷3.2＜1．

The case of noun are mainly ____________. A: accusative case B: dative case C: possessive case D: nominative case

Take this with you________you get into trouble. A: in case B: in the case C: in case of D: in no case

一个铀-235核裂变可以释放出200MeV的能量，相当于()J。 A: 3.2×10-12 B: 3.2×10-11 C: 3.2×10-10 D: 3.2×10-9

Be quiet ______ you wake the baby. A: in case of B: in any case C: in the case D: in case

______ fire, ring the alarm bell. A: In the case of B: In any case C: In no case D: In case of

Take your skates _____ you decide to go skating. A: in no case B: in case of C: in case D: in the case of

Write the telephone number down ____ you forget . A: in case of B: in case C: in a case D: in one case

case ,其中的表达式不正确的为( ) A: Case 100*a B: Case 0 To 100 C: Case Is&lt;100 D: Case 0