问题
选择题
固定化细胞技术在废水处理中有着重要作用，用于处理含氮、氨丰富的废水的固定化微生物通常是
①酵母菌 ②青霉菌 ③硝化细菌 ④反硝化细菌[ ]
A．①②
B．③④
C．①③
D．②④
答案
答案：B
搜题请搜索小程序“爱下问搜题”
固定化细胞技术在废水处理中有着重要作用，用于处理含氮、氨丰富的废水的固定化微生物通常是
①酵母菌 ②青霉菌 ③硝化细菌 ④反硝化细菌[ ]
A．①②
B．③④
C．①③
D．②④
答案：B
完形填空（共20小题；每小题1分，满分20分） 阅读下面短文，掌握其大意，然后从下列各题所给的四个选项中，选出最佳选项。 Perhaps you’ve attended some parties. But like New York，where a party or dinner often __36__ business with pleasure, a Washington party is a __37__ part of the business of politics, the business of making __38__ connections. Some Washington parties have a __39__ aura (气氛) about them, depending on who gives them and who is there, but most parties are open-house __40__ in fact, with the hosts not knowing most of the __41__ who are there. I went to a few of these parties __42__ I wanted to see the inside of some of the Washington mansions (公馆) I had __43__ so much about. Almost every time during the evening some man would come close to talk with me __44__, we didn’t know each other at all. Such a __45__ exchange clearly proves “a gathering of friends” __46__ Washington party standards. You don’t even need an __47__ to attend many Washington parties. You just have to know about them. No Washington hostess would __48__ her servants to ask you who you were. Most of the bigger parties, those with 300 or 400 guests, __49__ to impress somebody, and Washingtonians __50__. Most members of the Congress ,for example, __51__ middle-class backgrounds in smaller communities __52__ the country. They are dazzled (眼花缭乱的) by __53__. They are dazzled by big names. They are ready to help Washington __54__ hostesses. They go along with them because they are good friends or they don’t notice that they __55__ or they don’t care if they are. 小题1:.
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