The attack left many people feeling ______23____ and shocked.

rea threatened on Tuesday to abandon the armistice that ended the Korean War five decades ago, accusing Washington of planning an attack. An unidentified spokesman of the North's Korean People's Army said "the situation on the Korean Peninsula is getting extremely tense" because of alleged U. S. plans to send in reinforcements and build a naval blockade to prepare for a preemptive (先发制人的) attack. North Korea "will be left with no option but to take a decisive step to abandon its commitment to implement the Armistice Agreement," quoted by the North's state-run KCNA news agency．Armed forces of the two Koreas were in the middle of their annual winter training．

North Korea threatened on Tuesday to abandon the armistice because they______.

A．intended to have direct negotiations with the U. S.

B．prepared for the American preemptive attack

C．wanted to take a decisive step for many years

D．thought it possible the armistice would bind them

exactly a year ago, a school was taken over by Chechen militants armed with explosives. 331 people died in the siege. More than half of them were children. From Beslan, here is Sarah Rainsford,

Hundreds of people filed through the ruins of School No. 1 today, survivors of the Siege alongside friends and relatives of those who died here. Many wept as they brought flowers, lit candles and left children's toys on the charred floorboards of the school gym. One year on, the grief in Beslan is still raw. But many here are also extremely angry with the authorities. They are furious, no senior officials have been held to account for the fact that the government ever made it to the school, for the decision not to negotiate, and then for the violent way the 3-day siege eventually ended.

What is the news mainly about？

A．A bomb attack happened in Beslan.

B．An activity in commemoration of a man-made disaster.

C．A school in Southern Russia.

D．Chechen rebels in Russia.

How many people died in the attack？

A．4.

B．9.

C．10.

D．5.

Many millions of people have high blood pressure(hypertension 高血压). What's so frightening about this so called silent killer is that it often does not produce (51) for years, secretly damaging arteries and organs throughout the body until it erupts (爆发) in the form. of stroke, heart attack, congestive heart failure(充血性尽力衰竭) or kidney disease. (52) left untreated, even mild hypertension can reduce the life expectancy of a 35-year-old (53) several years. (Readings of 140 to 159 over 90 to 99 are mildly high; about 120/80 is normal. )

That's why high blood pressure is commonly treated with anti-hypertensive drugs. But studies (54) that in some people an increase in calcium(钙) consumption can help (55) blood pressure without medication(药物治疗)。

Calcium also seems to help prevent high blood pressure. (56) the results of 13-year survey (57) by the U.S. National Center for Health Statistics, James H. Dwyer, associate professor of (58) medicine at the University of Southern California School of Medicine, found that people who consumed 1300 milligrams of calcium a day were 12 percent (59) likely to develop hypertension than those (60) only 300 mg. a day. In people under age 40, risk was reduced by up to 25 percent.

Soon doctors may (61) some hypertension patients to increase their calcium intake, (62) the way they now advise sodium(钠) restriction. "It's (63) to add food or supplements than to go on a low-sodium diet," (64) Dr. David McCarron, professor of medicine at Oregon Health Sciences University. "Our studies show that people who try the low-sodium (65) don't stay with it very long. "

(51)

A．evidence

B．symptoms

C．marks

D．sign

The author is trying to show that ______ .

A．use of substances may vary from time to time

B．abuse of certain substances is harmful for health

C．the attack of September 11th has left incurable harm to people's mental health

D．terrorist attack increases anxiety and sense of insecurity among residents

The author is trying to show in this article that______.

A．use of substances may vary from time to time

B．abuse of certain substances is harmful for health

C．the attack of September 11th has left incurable harm to people's mental health

D．terrorist attack increase anxiety and sense of insecurity among residents

Why are baby chickens so prepared in fighting against enemies from left？

A．Because other members stand on the right side.

B．Due to surrounding conditions their brain developed toward asymmetry in the same direction.

C．Because enemies always attack from left side.

D．Because they can spare more attention to locate predator.

How many major generals were killed in the attack？

A．57.

B．54.

C．3.

D．1.

How many people got injured in the attack against the police station？

A．1.

B．2.

C．3.

D．4.