题目

下列关于人体血糖平衡调节的叙述中，正确的是    A．细胞内葡萄糖的氧化利用发生障碍，可导致血糖持续下降    B．糖尿病是由于经常摄入过量的糖所引起的    C．胰岛细胞产生的激素均能降低血糖含量      D．胰岛α细胞和β细胞共同调节血糖平衡   答案：DThe eyes are one of the most expressive of body language．Keith，seventeen，from Montclair， New Jersey，learned the hard way about one the eyes can make．“I had a teacher who heavily on classroom discussion，”Keith says．“He seemed to have a strong to know just when I didn’t have the answer．I couldn’t how he could be so ．Then it dawned on(逐渐被人明白)me． I didn’t know the answer，I would looking at him．When I did know what to say，I always stared straight back him．From that moment on，I myself to look him in the eye， I knew the answer or not．That trick has me a lot of trouble．” Many people， some policemen，believe eye contact is a good of testing honesty．If someone can’t look at you directly in the eye，then he or she is not playing ，they insist．After many experiments， ，a number of exports have found out that good liars can make false eye contact． Eye contact，though not a sure of dishonesty, is a clear way to show interest in another person．When a person looks at you and continues to do so，you know his attention is on you．When he turns his head away， his mind is probably ．But there is ．A shy person may have trouble making and keeping eye contact，no matter how interested he is in the other person．And certain nationalities，such as the British and Germans，are much oriented(适应)to eyeball-to-eyeball contact than，say，the French and the Arabs．1.A． letter B． notice C． message D． news2.A． looked B． graded C． lived D． took3.A． ability B． body C． mind D． way4.A． figureout B． speakout C． turnout D． putout5.A． slow B． sharp C． boring D． cautious6.A． Thefirsttime B． Lasttime C． Eachtime D． Attimes7.A． hate B． enjoy C． like D． avoid8.A． on B． at C． in D． of9.A． allowed B． forbade C． taught D． persuaded10.A． when B． whether C． if D． unless11.A． saved B． given C． increased D． offered12.A． except B． adding C． beside D． including13.A． lesson B． way C． chance D． approach14.A． honestly B． effectively C． efficiently D． constantly15.A． furthermore B． moreover C． however D． otherwise16.A． expression B． means C． sign D． trick17.A． discovered B． lain C． put D． fixed18.A． anywhere B． nowhere C． elsewhere D． everywhere19.A． exception B． expectation C． question D． adaptation20.A． worse B． less C． too D． enough