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【简答题】
One way to better your English is to watch lots of movies. By watching movies of native English speakers again and again, you will pick up slang terms that you are not likely to learn in classroom. In addition, listening to native speakers will help you to improve your accent, and will also help to train your ears. Here are some steps to get the most out of movies: Choose a movie that interests you. Whether it is the story or the actors that draw you to the movie, watching a movie you enjoy will make you more likely to work hard to understand it. Match the movie to your understanding level. Choose a movie where you can understand 80 percent of the dialog, and you will likely be able to figure out the rest within the context. If you are new to speaking English, try a children’s movie. You won’t learn anything from the movie if you don’t understand it, and you won’t enjoy it, either. Choose a movie that will provide you with useful vocabulary. If you are learning English for business, watch a movie like Wall Street or Office Space. If you are learning English in order to attend school overseas, watch a movie that is tied to your coursework. Get comfortable with the idea that there will be lots that you won’t understand when you watch the movie the first time or two in English. This is quite normal. Enjoy the movie and pick up as much of the vocabulary and grammar as you can each time. Watch each movie at least twice, back to back if possible. The second time through, turn off the subtitles. Watch the movie with a copy of the script in English whenever possible. You can often find movie scripts online or in bookshops. Rewind the movie whenever you come across a difficult line of dialog or a new phrase. This can help you fully understand it and master the pronunciation. If you are playing the movie from DVD, you can stop it whenever you don’t understand a sentence. You can then play the sentence many times and, with the subtitle the DVD offers, look up difficult words in your dictionary.
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参考答案:
举一反三
【判断题】13 C / 1 H 灵敏度 = 1/64
A.
正确
B.
错误
【多选题】裂殖酵母中有关周期蛋白依赖性蛋白激酶发现过程的描述下列说法正确的有
A.
cdc28是第一个被分离出来的调控细胞周期的cdc基因,由Paul Nurse从裂殖酵母中鉴定出来。
B.
cdc2 和cdc28本身都不具有激酶活性 ,只有与特定蛋白组分结合后才有激酶活性。
C.
cdc2 是芽殖酵母中 cdc28 的同源物且功能类似, 分子量均为34kDa。
D.
cdc2 调控 G2/M的时相转换, cdc28 调控G1/S 和 G2/M的时相转换。
【单选题】对结合酶来说,酶蛋白的功能是
A.
决定酶的特异性
B.
稳定酶分子构象
C.
增强酶活性
D.
在酶促反应中传递质子、电子或化学基团
【判断题】1 H, 13 C的异核二维相关谱由 13 C检测(HETCOR)变为 1 H检测(HSQC),优点是干扰的杂峰少,但检测的灵敏度低。(    )
A.
正确
B.
错误
【判断题】在核磁共振波谱分析中,测定 13 C比测 1 H的灵敏度高,但 13 C谱的分辨率低。    (    )
A.
正确
B.
错误
【单选题】有效成分为货制类化合物的天然药物水提取液,微除去其中的淀粉、多糖和蛋白质等杂质,宜用
A.
铅盐沉淀法
B.
乙醇沉淀法
C.
酸碱沉淀法
D.
离子交换树脂法
E.
盐析法
【判断题】如果单价、单位变动成本和固定成本同时变化,必然会导致利润发生变化。()
A.
正确
B.
错误
【判断题】如果单价、单位变动成本和固定成本同时变化,必然会导致利润发生变化。
A.
正确
B.
错误
【单选题】Lazar工业公司生产两种产品: Crates 和Boxes。这些产品的单位售价,成本和使用的资源情况如下。 Crates和Boxes是联产品,并且使用相同的设备生产。工厂的总固定制造费用是$2,000,000 ,总的固定销售和管理费用是$840,000。生产和销售的安排为Crates500,000单位和Boxes700,000单位。Lazar公司现在没有直接材料、在产品或者成品存货。Lazar公...
A.
增加$125,000
B.
减少$250,000
C.
增加$300,000
D.
增加$1,250,000
【简答题】苯在正常沸点(80.1℃)气化:C 6 H 6 (1)=C 6 H 6 (g), =33.9kJ·mol -1 。 (C 6 H 6 ,1)=172J·K -1 ·mol -1 ,则 (C 6 H 6 ,1)等于______。
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