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【单选题】
汽车尾灯控制电路用74LS161芯片作为控制器，那么74LS161芯片的置数端和清零端与时钟有什么关系？（ ）A.
置数端与时钟同步，清零端与时钟不同步
B.
置数端与时钟不同步，清零端与时钟同步
C.
置数端和清零端都与时钟同步
D.
置数端和清零端都与时钟不同步
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举一反三
【单选题】I _________ studying every evening because I want to get good grades.
A.
career
B.
quit
C.
routine
D.
spend time
【简答题】5 I was __________ (unfortunately) to get the grades to go to a good college.
【单选题】I was ______enough to get the grades not to go to a good college.
A.
fortunate
B.
unfortunate
C.
fortunately
D.
unfortunately
【简答题】I was _____ (unfortunately) enough to get the grades to go to a good college.
【简答题】I won't get good grades_______ I study hard.此题出自2015年黑龙江龙东地区中考英语真题及答案，2015年黑龙江龙东地区中考英语试题及答案 —I won't get good grades_______ I study hard. —That's ______ everyone is trying his best to prepare for the ...
【简答题】I was_____(unfortuantely)enough to get the grades to go to a good college.
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