【单选题】conversation 2. 7)
A.
He should come on Friday to take her place .
B.
He'd better take more driving lessons .
C.
He'd better take the test with another officer .
D.
He should have his car checke d thoroughly .
【判断题】PCO是指为筹办会议、展览及有关活动提供专业服务的公司。
【判断题】猫具有夜游性,但通过耐心调教,很可能在很大的程度上得以纠正。
【单选题】Conversation 2
A.
7) He enjoys what he does at the airport.
B.
He ’ s lucky enough to be employed.
C.
He ’ s going to quit his job.
D.
He ’ s got a well-paid job.
【单选题】B2U7conversation 2-2
【单选题】坚决惩治和有效预防腐败,关系( ),是党必须始终抓好的重大政治任务。
【单选题】某自由交配的种群在Ⅰ、Ⅱ、Ⅲ时间段都经历多次繁殖过程,定期随机抽取100个个体,测得基因型为AA、aa的个体数量变化曲线如图所示。下列相关叙述不正确的是【图片】
B.
Ⅱ段发生剧变的过程中, A 和 a 基因频率可能相同