— Can Ienter the laboratory,sir?— Under no circumstances________to enter it without approval. [ ]A.

更多内容推荐

• Nowadays children ________ this or that although they ‘re not willing to.[ ]A. are forced to study B
• — What do you think our manager is going to do this afternoon? — He _____ to attend a business meeti
• The company going from bad to worse, the employees _____ hardly enough to make a living. [ ]A. are p
• They won't let their teacher _______ in that way.[ ]A. to be treatedB. being treatedC. treated
• — There is _____ on using mobile phones at the gas station. — Do you mean talking on the mobile phon
• —Tony, make sure everything _____ for the meeting before 7:30.—Don't worry about it, sir. I
• The operation room in every hospital has to _______bacteria of any kind so that the patient being op
• 短文改错。High school in the United States is usually dividing into Two periodsthe first two and three ye
• He is not the kind of person that ______ in the comedy. In life, he is serious and conserved(保守).[ ]
• Stay awake!You should know that it________to sleep in class. [ ]A. doesn't permitB. is not perm
• ____________ many times, but he still couldn't understand it.[ ]A. Though he had been toldB. Ha
• It is reported that a woman as well as two children ______ from a big fire yesterday.[ ]A. was saved
• — Can I smoke here?— No, _____ at no time in the library.[ ]A. smoking permitsB. smoking does permit
• About one fourth of the families in the city have private cars and this number _____ to double in fi
• — Have you read today's report about your performance? — I don't care what _____ about me.
• The number of people in the world _____ about 6 billion and large quantities of waste _____ each yea
• —How was your trip to New York, Jennifer?—Fantastic! That was the first time I _______ to such a big
• -Do you know what speed _______ for a rocket to escape from the pull or gravity of the earth to send
• Stay awake!You should know that it________to sleep in class. [ ]A. doesn't permitB. is not perm
• Florence _______ each year by about a million tourists who came to see the art galleries,churches an
• 原核细胞与真核细胞的形态结构千差万别，但都有相似的基本结构，如细胞膜、细胞质和与遗传有关的核物质。这反映了细胞的[]A．差异性B．统一性C．多样性D．单一性-高一生物
• 真核生物、原核生物的遗传物质都是DNA。该事实说明生物具有[]A．统一性B．多样性C．适应性D．特异性-高三生物
• —Mum, can I go out and play basketball?—If your homework ______, you can go. [ ]A. will be done B. h
• Among all these flowers _____a kind of red rose, which was given by my friend. [ ]A. is included B.
• It _______ this morning that two of the body guards of the prime minister got killed and the ministe
• The water will be further polluted unless some measures _____. [ ]A. will be taken B. are taken C. w
• Cooperation or teamwork, the importance of which is often _____, plays an important part in football
• The temple _______ on the top of the mountain .[ ]A. is situatedB. situatesC. has situatedD. is situ
• He said that his car______stolen and he_______have to telephone the police.[ ]A. was; wouldB. has be
• Children won't put on weight easily if they _____to eat fruit and vegetables. [ ]A. persuade B.
• 下列关于细胞共性的描述正确的是[]A．所有细胞内都含有糖原B．细胞都能进行分裂和分化C．细胞都具有细胞质和细胞膜D．用龙胆紫溶液染色细胞，都能观察到深色的染色体-高三生物
• All communication has to be open, honest, and patient if a happy and healthy relationship _____.[ ]A
• The Chinese food ______ to be the healthiest in the world.[ ]A. considers B. is consideringC. is con
• 用link ,join, connect或其短语的适当形式填空1. The two towns are ____ by a canal.2.____ me ____ Peking University
• In the spoken English of some areas in theUS, the "r" sounds at the end of the words___.[
• He collected information on 1,000 people, whose IQ when they were ten years old. [ ]A. is testedB. h
• 关于细胞的多样性的举证不属实的是[]A．鸵鸟的卵细胞直径达15cm，是最大的细胞B．动物的神经细胞可伸出长达1m的神经纤维C．独立生活的支原体直径约100nmD．专营寄生生活的病毒需-高一生物
• We must apply what we have learned to our work because in no case _____from practice. [ ]A. should t
• 将以下句子改成被动语态。 1. She often waters the flowers every morning._________________________________________
• The number of deaths from heart disease will be reduced greatly if people ______to eat more fruit an
• Linda make sure the table____ beforethe guests arrive. A. be setB. set C. are setD. are setting-高三英语
• The two nurses _____ 100,000 yuan by the police but donated it to victims of the explosion. [ ]A. re
• The company going from bad to worse, the workers ____ hardly enough to make a living. [ ]A. are paid
• 细胞的统一性体现在①细胞都有相似的基本结构，如细胞膜、细胞质、细胞核②真核细胞细胞核内有染色体，原核细胞无染色体，但有拟核，其中都含有DNA③真核细胞多种多样，原核细胞-高二生物
• 下列关于细胞和细胞器的说法正确的是[]A．所有细胞都具有DNA，可说明细胞具有统一性B．念珠藻细胞经有丝分裂，细胞内的DNA数目不变C．细胞学说阐明了一切动物、植物、微生物是以-高三生物
• — Do you have any problems if you____ this job?— Well,I'm thinking about the salary... [ ]A. of
• An order has come that the police should find out where the thief ____.[ ]A. hides B. was hiding C.
• 下列各项中不属于细胞结构共性的是[]A．都具有遗传物质B．都具有膜结构C．都具有核糖体D．都具有细胞核-高一生物
• — The windows must have taken you quite a long time that day.— Right. They ____ for weeks. [ ]A. hav
• In this university a medal with ten thousand dollars ____ gains success in science and technology ev