【简答题】Tom likes fish very much. He often buys some fish in the shop and takes it home. But when his wife sees the fish, she says to herself, “Good ! I can ask my friends to have lunch, and we can eat the fi...
【单选题】Tom can can often ___ strange sounds recently.
【单选题】Tom can often _____ strange sounds recently.
【单选题】下列有关生物遗传变异和人类遗传病的叙述,正确的是 [ ]
A.
细胞中一个正常基因突变形成致病基因后一定能遗传给后代
B.
按照遗传病的遗传规律,通过遗传咨询可以确定胎儿是否患有白化病
C.
产前诊断过程中,染色体变异和基因突变均可以用光学显微镜直接观察
【简答题】句型转换 按括号中的要求完成句子,每个空格填一个单词。(5分) 小题1:Tom can speak Chinese well. (改为否定句) Tom _______ ________ speak Chinese well. 小题2:Ellen often flies kites in the park .(对划线部分提问) ________ __________ Ellen often fly ...