造成汽油发动机过热的主要原因之一是（）过稀。

2012年5月发生了日环食，其形成原因是______；当太阳光透过三棱镜发生______时，我们可以观察到多种颜色．

Even in countries in which English is not the primary language, it is important to learn English for a number of reasons. First of all, many English-speaking individuals tour other countries and they may not speak the native language of that country, so it is necessary for them to speak to others who can speak English. Then again, many wish to learn English because they are hoping to visit or even live in an English-speaking country someday.

2 However, learning how to speak English in a non-English country       . Below are some ways that an individual wishing to speak English can learn in their own country:

● The Internet is going to be your best friend. It is full of resources, reading materials, sound recordings, and so much more that can help you learn the meaning of the words that you read and speak.

● Find an English CD and listen to it. Find out the meanings the words and even try to sing along. This can be a lot of fun. If you want to, you can record yourself doing this and really have a lot of fun.

● Try to surround yourself with as many English materials as possible. Not just books, movies, and CDs, but magazines and any products that you can find in the store that may have English written on them. Some major brands serve many countries and have multiple languages written on their packaging.

● And the most important means to learn English is online ESL courses.

They help you learn at your pace and provide you with materials that will have you speaking English in no time. All of the other steps can be used outside of your courses to make you proficient in the language.

小题1:What is the main idea of the text?(no more than 10 words)

小题2:Do you think singing English songs is a good way to study English? Why? (no more than 20 words)

You can              singing along if you like and that will be very interesting.

小题3:Fill in the blank in Paragraph 2 with proper words. (no more than 5 words)

小题4:How can a pair of jeans by “True Religion Jeans” brand from the US help you with your English? (no more than 10 words)

小题5:What does the word “they” (Line 2, Paragraph 6) probably refer to?(no more than 3 words)

运输成本在物流总成本中的比例高达（）。

A．60%

B．50%

C．40%

D．30%

有一投资者在某日申报债转股500手，但此转股的初始价格为每股20元，则该可转债可转换成发行公司股票数量为( )。

A．500股

B．2500股

C．5000股

D．25000股

红细胞渗透脆性增高的疾病是

A．缺铁性贫血
B．再生障碍性贫血
C．遗传性球形红细胞增多症
D．自身免疫性溶血性贫血
E．海洋性贫血