单选题You can improve your pictures by _________.

单选题The floors of the ocean have many riches that can be used by man. Oil and chemicals and minerals (矿物) already are taken from the sea. By using nuclear energy, ocean water can be turned into fresh water by taking the salt out. In the near future, it is possible for human beings to produce food from farms under the sea. Food grown in the sea could help to meet the needs of population all over the world which is increasing fast. Thousands of people go hungry every day. About ten to fifteen percent of the world's people do not have enough food. Some scientists believe that someday the sea will be used to make electric power. This would help to meet the need for more power for the world's industries. The decreasing supply of coal, oil and gas shows that the need to find new kinds of power is urgent.

单选题It was America ______ launched the war against Vietnam. A. that B. when C. whom D. which

单选题Jacky White didn't know exactly the reason ______.

单选题He doesn't dare to leave the house ______ he should be recognized. A. in case B. if C. provided D. so that

单选题He regretted ______ so much time playing the computer games.

单选题Mike has already put forward his suggestion ______ a production plan should be completed next week.

单选题Later he ______ to know her better.

单选题Time ______ very fast and a new year will begin soon.

单选题The road department apologized for any inconvenience caused while road improvements were in progress.

单选题You are too careful to do anything.

单选题An application letter—the letter you write to apply for a job—will probably be the most important kind of letter you will ever write. Very likely, it is a letter that you will write several times, as most people change employers several times during their business careers. Your first job, as well as each of those that follow, is almost certain to involve some writing—and most employers look upon an application letter as an excellent indicator (标志)of an applicant's (应聘者) writing and other communication skills. The purpose of your application letter, which should go together with your resume, is to get you an in-person interview with the employer if the letter is a good one, it most likely will achieve its objective. The general plan of an application letter closely matches that of a sales letter. For an application letter, the "product" you are selling consists of your knowledge, your skills, your personality—everything about you that will enable you to perform the job to the satisfaction of employer. As a result, you must understand the employer's needs, know the specific requirements of the job you are seeking, and know what you have to "sell".

单选题I ______at six o'clock, but now I get up very late.

单选题If you ask them, they'll be ______ pleased to accept your invitation.

单选题At a busy cocktail party, they won' t be surprised if you don' t come back in a minute.

单选题Little ______ about him when I first met him in that company.

单选题An ebook, also known as an electronic (电子的) book, is an electronic version (版本) of a print of book that you can download (下载) and read. What you need in order to read an ebook is an Ebook Reader, which is a kind of free software used by your computer. Make sure you have the proper Reader before you download your ebook from the Internet. The software allows you to turn the words on the screen into proper size you like. It also helps you turn pages and change your choice of viewing. Ebooks are a fun alternative to regular books. You can download them to any computer, including your portable (便携式) computer so you can take them with you when you travel, and create your own library of hundreds of titles. Best of all, when you order an ebook, there is no waiting and no shipping or handling charges. The amount of time it takes to download your ebook depends on the speed of your connection and the size of your ebook.

单选题Congratulations on purchasing from our company the C800 Coffee Maker, which is suitable for home use.

单选题In the story the small man was given ______.

单选题What do you know about the center's employees?