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【简答题】
现从3道选择题和2道填空题中任选2题． （Ⅰ）求选出的2题都是选择题的概率； （Ⅱ）求选出的两题中至少1题是选择题的概率．
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举一反三
【单选题】—It is _______he often fails in exams_______ makes his parents worried about him. —So, he has to work whole-heartedly.
A.
what, that
B.
that, what
C.
that, that
D.
/, that
【简答题】电阻器的精度等级为I,其允许误差±()%
【单选题】He often makes his sister _____ ,but that time he was made ___ by his sister. [ ]
A.
laugh, to laugh
B.
laugh, laugh
C.
laugh, laughing
【单选题】------ It is he often fails in the exams makes his parents worried about him. ------ So, he has to work whole- heartedly.
A.
what; that
B.
that; what
C.
that; that
D.
/ ; that
【单选题】It is ______he often fails in exams ______makes his parents worried about him.
A.
what; that
B.
that; what
C.
that; that
D.
/ ; that
【单选题】It is ______ he often breaks the school rules ______ makes his headteacher unsatisfied with him.
A.
what that
B.
that what
C.
that that
D.
which that
【单选题】Tom often makes his brother _______ but yesterday he was made _______ by his brother. [ ]
A.
cry; to cry
B.
to cry; cry
C.
cry; cry
D.
to cry; to cry
【单选题】Tony often makes his sister _______, but this time he was made ______by his sister.
A.
cry, cry
B.
crying, crying
C.
to cry, cry
D.
cry, to cry
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