[单项选择]It was extremely cold. ______, it began to snow.
A. To make matters worse
B. After all
C. In any case
D. As a result

[单项选择]Clashes began（）
A. in mid-February.
B. in early-January.
C. in mid-January.
D. in early-February.

[单项选择]

Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousand of a millimeter: a pinhead is about a millimeter across.
Rod-shaped bacteria are usually from two to four microns long, while rounded ones are generally one micron in diameter. Thus if you enlarged a rounded bacterium a thousand times, it would be just about the size of a pinhead. An adult human magnified by the same amount would be over a mile (1. 6 kilometers) tall. Even with an ordinary microscope, you must look closely to see bacteria. Using a magnification of 100 times, one finds that bacteria are barely visible as tiny rods or dots. One cannot make out anything of their structure. Using special stains, one can see that some bacteria have attached to them wavy-looking " hairs" called flagella. Others have only one flagellum. The fla
A. Right
B. Wrong
C. Not mentioned

[单项选择]Her behavior is extremely childish.
A. simple
B. immature
C. beautiful
D. foolish

[单项选择]Her behaviour is extremely childish.
A. simple
B. immature
C. beautiful
D. pretty

[单项选择]Although he was generally considered an extremely ______individual, his testimony at the trial revealed that he had been very ______.
A. intrepid...valiant
B. guileless...hypocritical
C. abstemious...temperate
D. meek...timorous
E. ingenuous...obtuse

[单项选择]

Electronic mail has become an extremely important and popular means of communication.
The convenience and efficiency of electronic mail are threatened by the extremely rapid growth in the volume of unsolicited commercial electronic mail. Unsolicited commercial electronic mail is currently estimated to account for over half of all electronic mail traffic, up from an estimated 7 percent in 2001, and the volume continues to rise. Most of these messages are fraudulent or deceptive in one or more respects.
The receipt of unsolicited commercial electronic mail may result in costs to recipients who cannot refuse to accept such mail and who incur costs for the storage of such mail, or for the time spent accessing, reviewing, and discarding such mail, or for both. The receipt of a large number of unwanted messages also decreases the convenience of electronic mail and creates a risk that wanted electronic mail messages, both commercial and noncommercial, will be lost, overl
A. cause companies to fail in business
B. cause wanted e-mail messages to lose
C. damage the credit of a company
D. do good to a small company