单选题Why are some of us good at math, or writing, while others______at art or basketball?

单选题My children are looking forward to ______ a trip to Paris.

单选题The desk over there ______hard wood.

单选题To qualify for such a position, the native would first have to receive specialized training, and this is ______.

单选题Insomnia, or “poor sleep”, can have bad effects on a persons health and general well-being. It can___请作答此空__21on both our physical and mental health and can lead to other health_____22. Insomnia

单选题The conference ______ a full week by the time it ends.

单选题Economic theory would predict that a fall in the price of a commodity would lead to an increase in ______.

单选题(Unlike) a stock market, a money market -- a network of brokers, buyers, and (selling) – (is not) (located in) a specific place.

单选题The number of people who surf the Internet via mobile devices in China has for the first time 29 the number using computers to go online, an industry report said on Monday. The number increased by 14.42 million over the past six months, so that now 83.4 percent of China's Internet surfers are using mobile phones to go online, according to the report 30 by the China Internet Network Information Centre, a government-backed industry administrative body. The total number of Chinese netizens was 632 million by the end of June, 527 million of whom 31 onto the World Wide Web through their smartphones, the report said. It is the first time that the number of mobile Internet users has surpassed that of those surfing the Web in 32 ways, such as with personal computers and laptops, said Liu Bing, deputy director with the CINIC. 'In other words, the mobile phone can be 33 as the key terminal device for Chinese to get online,' he said. As the mobile network has taken the lead in the country's Internet development, its status has also become 34 among netizens, he said. The increasing number of smartphone owners has driven a rapid rise in e-commerce, instant messaging and entertainment applications, 'which reflects a 35 demand of netizens', he said. According to the report, the number of users who use mobile phones to make 36 has increased 63.4 percent from January to June, with the growth of payment apps likewise surging in that period. 'The mobile payment is becoming much closer with consumers and it has been making greater 37 to e-commerce development,' Liu said. Yin Jingxue, a mobile Internet analyst, confirmed that mobile devices have played the more 38 role in Web development in the country. A. traditional B. firmer C. obstacles D. logged E. contributions F. advanced G. important H. diverse I. changeable J. issued K. lagged L. regarded M. exceeded N. surfed O. payments

单选题He has got too much ______ to worry about your problem.

单选题The author's attitude toward the opinion held by Card and DiNardo is one of

单选题The travelers ________ their journey after a short break.

单选题A full______of all the reasons for and against closing the railway has begun.

单选题The sitting-room feels comfortable with the fireplace shedding warm and faint light.

单选题选出下面读音不同的选项（）。

单选题His excuse for being late this morning was his car had ______ in the snow.

单选题根据下面资料，回答问题。It was Sharing Day! The teacher had asked the students to bring something interesting to class. Jimmy found the little box he and Dad had made.Inside was a piece of rock， a sand dollar and

单选题A: You can take it. It's not occupied.B: ______