题目

胚胎干细胞功能特性不包括（ ） A．具有发育的全能性 B．体外培养可以分化成各种组织、器官 C．冷冻保存可以进行遗传改造 D．可以进行增殖 答案：解：A、胚胎干细胞分化程度低，具有发育全能性，A正确； B、体外培养胚胎干细胞，只分裂不分化，加入某些诱导因子可诱导其分化成不同的组织器官，进行器官移植，B错误； C、胚胎干细胞冷冻保存经进行遗传改造后，可以治疗人类疾病，C正确； D、体外培养胚胎干细胞，可以通过细胞有丝分裂而进7、 Have fun with Stamp collecting... Join the Collectors Club today!?? If you enjoy learning all about stamps, then the Royal Mail’s Collectors Club is for you. Join the club and discover the fascinating world of stamps. There are over 70,000 members and it is one of the biggest clubs of its kind in the country. Become a member today and you will receive lots of wonderful stamp collecting goodies...? ●?A Starter pack...?? And every two months...? ●?Collectors Club magazine?? ●?Collectors Corner supplement And every year...? ●?A new Stamp Calendar?? ●?A set of Album Pages?? Join today! ? It won’t cost you much to experience the fun of stamp collecting. Collectors Club Starter Pack? 1.100 used stamps and hinges.?? 2.The Collectors Club Guide to Collecting.? 3.The latest Collectors Club magazine （packed with news and views about stamps, quizzes and competitions, all in colour）? 4.Album pages? 5.Badge and stickers? 6.Membership card? 7.Royal Mail Stamp Calendar.?? **********? Already Registered?? Sign In Here!? Learn More? View a Flash presentation  about our club （3.51MB） 1. Which of the following is NOT included in a starter pack? ?       A. One hundred used stamps and hinges and album pages.?    B. The Collectors Club Guide to Collecting and badge and stickers.?    C. The latest Collectors Club magazine and membership card.?    D. Royal Mail Stamp Calendar and Collectors Corner supplement. 2. This advertisement is written for people who want to_______.?    A. make money through collecting stamps? B. develop stamp collection as a hobby?    C. get something free from the club D. find out where the club is located? 3. From the advertisement we can learn_____.? A. Collectors Club is among the biggest clubs in this country? B. how much you must pay to become a member of the club? C. today is the last day for stamp collectors to join the club? D. members may receive a set of album pages every month? 4. Where is this advertisement most probably found??       A. In a newspaper.                                           B. On a web page.? C. In a magazine.                            D. On a TV program.?