8.—__________ behind the chair?
—My alarm clock.
A. What ’s
B. Where’s .
C. Who’s
D. Where are
第1题:
计划的主要内容包括______计划必须清楚的确定和描述这些内容。
A.What,Why,Who,Where,When,How many,How much
B.What,Why,We,Where,When,How to,How much
C.What,Why,We,Where,When,How,How much
D.What,Why,Who,Where,When,How,How much
第2题:
计划的主要内容包括______,计划必须清楚地确定和描述这些内容。
A.What, Why, Who, Where, When, How many, How much
B.What, Why, We, Where, When, How to, How much
C.What, Why, We, Where, When, How, How much
D.What, Why, Who, Where, When, How, How much
第3题:
10. 已知反应 (1) MnO(s) + 1/2O2(g) = MnO2(s) 的ΔrH1my (2) MnO2(s) + Mn(s) = 2 MnO(s) 的ΔrH2my 则 ΔfHym(MnO2、S) = () A.ΔrH1my-ΔrH2my B. 2ΔrH1my+ΔrH2my C. 2ΔrH1my-ΔrH2my D. ΔrH1my+2ΔrH2my
第4题:
已知字符串s='who',则执行语句 s[-1]='at' 后,s的值为:
A.'what'
B.'wha'
C.'whoat'
D.报错,且s的值不变
第5题:
4、已知字符串s='who',则执行语句 s[-1]='at' 后,s的值为:
A.'what'
B.'wha'
C.'whoat'
D.报错,且s的值不变