患儿,1岁,高热,呕吐10h。面色灰暗,嗜睡,前囟隆起,颈软,怀疑化脓性脑膜炎,为协助诊断最重要的检查是
A. 血培养
B. 脑脊液
C. 血常规
D. 大便常规
E. 咽拭子培养
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The king made a promise______he would give the tailor both half of his kingdom and his daughter, but none the tailor had.
A. when
B. once
C. that
D. since
From industrial beginnings in the nineteenth century, plastics______through a hundred and
A. struggled
B. have struggled
C. are struggling
D. has struggled
Each of the built-in costs of a product must bring in some profit at each stage: truckers
A. would not be
B. will not be
C. were not
D. can not be