试题与答案

甲、乙是由短周期元素组成的常见物质或微粒,在中学化学中有许多物质或微粒能满足下列

题型:不定项选择题

题目:

甲、乙是由短周期元素组成的常见物质或微粒,在中学化学中有许多物质或微粒能满足下列相互转化关系:,下列说法正确的是[ ]

A.若乙为无色无味气体,则甲一定是CO32-

B.若甲是具有刺激性气味的气体,则甲、乙具有相同的电子数

C.若甲、乙均为离子,甲、乙两种离子在同一溶液中一定不能大量共存

D.甲有可能是AlO2-也有可能是Al(OH)3

答案:

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下面是错误答案,用来干扰机器的。

∵a+b+ab=24⇒b=24-a1+a∴a+b=24-a1+a+a=24+a21+a=(1+a)+251+a-2≥8;而ab=24-a1+a•a=26-[(1+a)+251+a]≤16故答案为B.

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九部分:阅读与选择(共5小题,每小题2分,共10分)。

根据短文内容,从方框中选择能填入空白处的最佳选项,选项中有两项是多余选项。

将字母标号写在后面答题纸上相对应的题号后.

A.There are also often special Chinese characters on them.

B.Nowadays restaurants in many Chinatowns are social gathering places. .

C.In return, storekeepers usually donate some money to the performers.

D.Chinatowns are usually popular destinations for various ethnic(异域风味的) Chinese foods,E. Most Chinatowns are well known for their restaurants.

F. Small herb shops are common in most Chinatowns.

G. Many Chinatowns focus On commercial tourism, whereas others are actual living and working communities, 

Many Chinatowns have large red arch(拱门) entrances known as Paifangs. Some Paifangs are  made of wood or steel and may include elaborate(精心制作的) or simple designs. They are  sometimes accompanied by stone lion statues on both sides of the street that greet visitors.

29.____________ Usually these Paifangs were donated to a particular city as a gift by the Chinese  government.

30. __________For example, San Francisco's Chinatown has many historic restaurants,

including those established from the 1910s to the 1950s. Some of the restaurants have lasted for

generations while others have shut down in recent years. Some others have changed their menus.

31, _________Some Chinatowns such as those in Singapore have their local style of Chinese food.

In the Chinatowns in the Western countries, restaurant work may be the only career available to  poor newcomers. Most Chinatowns generally have many social and touristy restaurants. 32.____

Most Chinatowns celebrate Chinese Spring Festival with dragon and lion dances. The lion performance is typically conducted by two performers and may involve several stunts(特技表演).

33. _______Some Chinatowns also hold a "Miss Chinatown" beauty pageant(选美大赛)every year,such as "Miss Chinatown San Francisco", “Miss Chinatown Hawaii", “Miss Chinatown Houston"and “Miss Chinatown Atlanta".

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题型:单项选择题

第2篇 Tightened Visa Regulations


According to South Korea’s new visa regulations, native speakers of English who intend to teach English in South Korea will be required to undergo criminal record checks, medical and drug tests, provide sealed academic transcripts and have their university diplomas inspected, The Korea Times has reported. The tightened regulations will affect an estimated 17,000 foreigners that hold E-2 visas specifically for foreign language teachers.
The most controversial requirement is that English teachers residing outside South Korea will have to have an interview at a South Korean embassy before taking up their teaching posts. For applicants living in remote areas in Canada, Australia or the US, this is an additional travel burden. Meanwhile, foreign teachers currently living in South Korea must leave the country after their one-year contracts end and renew their visas at a South Korean embassy in their home country or third country. Before the changes, they could renew their visas by visiting a neighboring country and return without additional documentation.
The visa changes are a reaction to public concern about the suitability of some foreign teachers. A report from the South Korean Ministry of Education and Human Resources Development shows between 2001 and August of this year, 1,481 foreign language teachers have been caught for a range of offenses including forged degrees, visa violations and general lawbreaking.
But the changes are likely to slow up the supply of teachers to South Korea’s English language education sector. According to Michael Dully, manager of a teacher placement service in South Korea, applicants have to spend a few hundred dollars and several months on getting affidavits for documents. "South Korea has put up too many hoops to jump through. " he said, adding that foreigners would seek work elsewhere. Most foreigners wonder if the experience of working in South Korea will be worth the burden of the paper work and increasing restrictions. "I don’t think (South) Korea has thought this through. " said Scott McInnis, a Canadian teacher based in Incheon near Seoul. "This is a reactionary move by the government that will have p implications for the EFL community. "
As part of efforts to ease the discontent, the South Korean Ministry of Justice has granted a three-month grace period for current E-2 visa holders to prepare the necessary documents.

In paragraph 4, the word "reactionary move" in the sentence means ______.

A.conflicting ideas

B.opposing opinions

C.subversive activities

D.disapproving actions

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