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【简答题】
Around the world, people have different ideas about what good manners are. When you go to restaurants in different parts of the world, it’s 46 to know the right and wrong things to do. For example, in China it’s OK to 47 a lot of noise in a restaurant. In fact, if a restaurant isn ’t 48 or lively, you may think there’s something wrong with it. However, in many western countries, restaurants are quiet places. If a table is too loud, other people who are eating there might even 49 to the owner of the restaurant. Paying the bill 50 also different from country to country. In China, one person usually pays 51 everybody. In western countries, one person pays if he or she is entertaining clients(宴请宾客), but 52 friends eat together, they usually share the cost. This is called “Going Dutch(均摊费用)”.Also, when westerners pay the bill, they usually leave some money for the 53 .This is called “leaving a tip(小费)”. Leaving a tip is thought to be polite. In the US, it’s 54 to leave tips of 10%,15%,or 20% of the bill, which is decided by how good the service is. Good waiters can make a lot of money! The way people eat food is different in the world, but you can 55 the same kind of food in many countries. Chinese and Italian food, for example, are popular all over the world. 小题1:A. popular           B. difficult              C. important 小题2:A. cause             B. keep                 C. make 小题3:A. noisy             B. noise                C. lucky 小题4:A. shout              B. explain              C. complain 小题5:A. are               B. is                  C. be 小题6:A. on                B. for                 C. in 小题7:A. until               B. when               C. unless 小题8:A. gatekeeper          B. seller               C. waiter 小题9:A. terrible             B. common             C. serious 小题10:A. invent              B. find                C. prefer
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举一反三
【判断题】在计算机网络中传送的文件以及电子邮件通过数字签名来模拟现实中的签名效果。()
A.
正确
B.
错误
【多选题】PCR及其衍生技术主要应用于
A.
基因的体外突变
B.
目的基因克隆
C.
DNA序列分析
D.
基因表达检测
E.
DNA和RNA的微量分析
【单选题】PCR技术能够迅速应用和推广主要依靠( )
A.
特异的PCR引物
B.
Mg2+
C.
耐热DNA聚合酶
D.
dNTP
【单选题】在无纸化的网络环境中,进行交易鉴别的方式是通过( )
A.
手写签名
B.
印章
C.
电子签名
D.
指纹
【简答题】他们还发起了一个网络签名,希望能恢复的和平与秩序。
【简答题】读下图,回答问题。 (1)图中A是美国首都___________,美国最大城市是___________(填代号),名称是___________。 (2)图中四个城市中,有“汽车城”之称的是_______(填代号),名称是___________。 (3)联合国总部所在地是美国的 [     ] A.华盛顿 B.渥太华 C.纽约 D.洛杉矶 (4)图中C城市是___________ ,在该城市附近的_...
【单选题】PCR技术主要应用于()。
A.
目的基因的克隆
B.
基因表达与调控
C.
DNA微量分析
D.
以上均可以
【简答题】客票票价分为()、()客票票价。
【简答题】PCR技术,即( )反应技术,是模拟体内DNA的天然复制过程,在体外扩增DNA分子的一种分子生物学技术,主要用于扩增位于两段已知序列之间的DNA区段。
【单选题】PCR技术主要应用于
A.
目的基因的克隆
B.
基因表达与调控
C.
DNA微量分析
D.
遗传病与传染性疾病的诊断
E.
以上均可以
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