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【简答题】
Please help! Ladies and gentlemen, thank you very much for coming to this concert. I hope you have enjoyed the music. The purpose of this concert is to (1) money for children in Africa. Every day (2) children in Africa die because they have diseases or have not enough (3) . There are two main reasons. First, there are no jobs for the children’s parents, so they have no money to buy food or (4) . Second, the governments in many African countries do not have the money to take care of poor people. Most African countries are poor. The land is not good for (5) food and the weather is also bad for farming. The organization we are trying to help, the Feed Africa Fund, _(6) a lot of money every year on food for poor people in Africa. The money comes (7) people like you kind, generous people who do not want to see children die form hunger. Just one dollar can buy enough rice or corn to (8) a family of four for three days. How much do you spend on food every day? Ten dollars? Twenty dollars? I am sure you can spend a little (9) on your own food so that you have a few dollars for The Feed Africa Fund. Ladies and gentlemen, we will now take a (10) . Please be generous. Thank you. A B C D 小题1: spend pay borrow raise 小题2: hundred hundred of hundreds of hundreds 小题3: to play to eat to drink to pay 小题4: clothes medicine houses furniture 小题5: eating drinking growing watering 小题6: costs borrows lends spends 小题7: to from with about 小题8: build develop feed organize 小题9: more fewer less most 小题10: show collection look seat
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【简答题】已知细胞合成DNA有D和S两条途径,其中D途径能被氨基嘌呤阻断。人淋巴细胞中有这两种DNA的合成途径,但一般不分裂增殖。鼠骨髓瘤细胞中尽管没有S途径,但能不断分裂增殖,将这两种细胞在试管中混合,加聚乙二醇促融,获得杂种细胞。请回答: (1)试管中除融合的杂种细胞外,还有_________种融合细胞。 (2)设计一方法(不考虑机械方法),从培养液中分离出杂种细胞,并说原理。 方法:_________...
【简答题】旅游团离境后,全陪应认真处理好旅游团的遗留问题,提供可能的延伸服务。 ( )
【判断题】在IMG标签中的alt属性里添加内容可以告诉搜索引擎该图片是什么意思。
A.
正确
B.
错误
【判断题】机动车驶近急弯、坡道顶端等影响安全视距的地方,以及超车或者遇有紧急情况时,应当减速慢行,并鸣喇叭示意。
A.
正确
B.
错误
【单选题】以淀粉为指示剂,用碘标准溶液测定维生素C的含量时,当溶液变为浅蓝色且30 s不褪色为终点。若将此溶液放置一段时间,则溶液( )。
A.
蓝色消失
B.
蓝色加深
C.
颜色不会发生任何变化
【单选题】双作用叶片马达的叶片在转子槽中的安装方向应是
A.
沿着径向方向安装;
B.
沿着转子旋转方向前倾一角度;
C.
沿着转子旋转方向后倾一角度;
D.
没有一定的规律。
【判断题】旅游团离境后,全陪应认真处理好旅游团的遗留问题,提供可能的延伸服务。( )
A.
正确
B.
错误
【判断题】旅游团离境后,全陪应认真处理好旅游团的遗留问题,提供可能的延伸服务。( )
A.
正确
B.
错误
【单选题】在有些情况下,需要将一个图层与它下面的图层合并,可以选择该图层,然后执行“图层>向下合并”命令,或按下 组合键,即可将该图层向下合并。
A.
Ctrl+A
B.
Ctrl+V
C.
Ctrl+C
D.
Ctrl+E
【判断题】在标签中的alt属性里添加内容可以告诉搜索引擎该图片是什么意思。( )
A.
正确
B.
错误
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