题目

下列说法正确的是(    ) A．1个细胞中染色体数与着丝点一致 B．1个细胞中染色体数与DNA分子数一致 C．初级精母细胞中DNA分子数与正常体细胞中的一致 D．减数第二次分裂后期，次级精母细胞中的染色体数是正常体细胞中的一半   答案：ADNA分子复制之后，1个细胞中染色体数与DNA分子数不一定相同，初级精母细胞中DNA已复制，是正常体细胞中的两倍，减数第二次分裂后期，染色单体已经分开，次级精母细胞中的染色体数和正常体细胞中的相同。补全对话阅读下列各小题，根据汉语及句末括号内的动词提示，用相关的动词短语完成句子（每空最多不超过四个词）．根据对话内容，从方框内的选项中，选择 5 个恰当的句子完成对话，并将所选句子前的字母代号涂在答题卡上的相应题号后．（Nancy comes to Huanggang for a tour．She meets Li Fei in the street．）N：Good afternoon !I’m Nancy．Nice to meet you!L：Nice to meet you，too．I’m Li Fei．1._____________________N：Yes．I hear Huanggang is a beautiful city．By the way，where are you going？L：I’m going to relax myself by West Lake．2._____________________N：Sure，I’d love to．（Ten minutes later．）N：Look! There are so many people boating on the lake．Why？L：3. Qu Yuan was a great poet in ancient China．On that day，we also throw zongzi into the lake or river．N：Sounds very interesting．4.________L：You’re welcome．Oh，Nancy．I have to leave now．I’ll prepare for tomorrow’s final exam．N：5. Good bye!L：Bye bye!A．Would you like to go there with me？B．When did you come to Huanggang？C．Oh，they’re preparing for tomorrow’s Dragon Boat Festival in memory of Qu Yuan．D．OK．Good luck to you!E．Are you on a vacation here？F．Could you tell me something about Dragon Boat Festival？G．Thank you for telling me a lot．