【单选题】The reason why Jack failed to attend the lecture is because he had a had cold.
【简答题】A.It was a long lecture, but easy to understand. B.It was not as easy as he had thought. C.It was as difficult as he had expected. D.It was interesting and easy to follow.
【判断题】世界上第一例试管婴儿,在1978年诞生于中国。
【单选题】________ here yesterday, he would attend the lecture with us today. [ ]
【单选题】1978年诞生的世界上第一例“试管婴儿”,为不孕症患者带来了福音;1996年第一只克隆动物“多利”问世,证明了高度分化的动物体细胞的细胞核仍然保持有全能性。制造“试管婴儿”和克隆动物所采用的生殖方式分别是( )
【单选题】世界上第一例试管婴儿诞生于1978年的( ) A. B.英国 C.中国 D. E. 中国
【简答题】从1978年7月25日世界上第一位“试管婴儿”诞生,至今全球试管婴儿数量已达到400万。1996年7月5日克隆羊“多利”诞生,至今已成功克隆了多种动物。请分析回答试管婴儿与克隆技术的有关问题: (1)试管婴儿和克隆动物的培育过程中均会用到的生物技术有___________、__________。 (2)试管婴儿和克隆动物的生殖方式分别属于____________和_____________。 (3...
【单选题】here yesterday, he would attend the lecture with us today.
【单选题】患者女,37岁。有胃溃疡史7年。因突发腹痛2小时来急诊。采集病史时应特别注意询问