[单项选择]

Taking Showers" Can Make You III"

Showering may be bad for your health, say US scientists, who have shown that dirty shower heads can deliver a face full of harmful bacteria. Tests revealed nearly a third of devices harbour significant levels of Mycobacterium avium, a bug that causes lung disease. Levels of M. avium were 100 times higher in shower head than those found in typical household water supplies. M. avium forms a biofilm that clings to the inside of the shower head, repofls the National Academy of Science.
In the Proceedings journal, the study authors say their findings might explain why there have been more cases of these lung infections in recent years, linked with people tending to take more showers and fewer baths.
When the researchers swabbed and tested 50 shower heads from nine cities in seven different states in the US, including New York City and Denver, they found 30% of the devices posed a potential risk.

A. Some household devices can harbor bacteria.
B. There are more M. avium in the inside of the shower head than in other water supplies.
C. M. avium can not exsit in orther water supplies.
D. M. avium can lead to lung diseas

[单项选择]
Showering may be bad for your health, say US scientists, who have shown that dirty shower heads can deliver a face full of harmful bacteria. Tests revealed nearly a third of devices harbour significant levels of Mycobacterium avium, a bug that causes lung disease. Levels of M. avium were 100 times higher in shower head than those found in typical household water supplies. M. avium forms a biofilm that clings to the inside of the shower head, repofls the National Academy of Science.
In the Proceedings journal, the study authors say their findings might explain why there have been more cases of these lung infections in recent years, linked with people tending to take more showers and fewer baths.
When the researchers swabbed and tested 50 shower heads from nine cities in seven different states in the US, including New York City and Denver, they found 30% of the devices posed a potential risk.

A. The water from the shower head is full of bacteria.
B. The water would be drunk by the people when taking shower.
C. The bacteria- filled droplet in the air would be inhaled by people.
D. Because the shower heads are usually used by more than one peopl

[填空题]If someone asks you how you can make you always 73. ______
happy you will perhaps find rather difficult to give him 74. ______
a proper answer. Did you remember the old saying "No 75. ______
human being can really happy who is not giving or trying 76. ______
to give happiness to others" If you will always think of 77. ______
taking more from others and give them less, you won’t be 78. ______
able to have happiness in your life even you are very rich. 79. ______
Here’s an article for you. If each of you follow it, there 80. ______
will be an end of many unhappy days of yours. So you should 81. ______
learn to give up your own interests when necessarily to do so. 82. ______

[单项选择]

Motherhood may make women smarter and may help prevent dementia in old age by bathing the brain in protective hormones, US reseachers reported on Thursday.
Tests on rats show that those who raise two or more litters of pups do considerably better in tests of memory and skills than rats who have no babies, and their brains show changes that suggest they may be protected against diseases such as Alzheimer’s. University of Richmond psychology professor Craig Kinsley believes his findings will translate into humans.
"Our research shows that the hormones of pregnancy are protecting the brain, including estrogen, which we know has many neuroprotective effects," Kinsley said.
"It’s rat data but humans are mammals just like these animals are mammals," he added in a telephone interview. "They go through pregnancy and hormonal changes. "
Kinsley said he hoped public health officials and researchers will look to see i
A. The experiments on the rats have nothing to do with humans.
B. The experiments on the rats are very important for animals,
C. The experiments on the rats are much the same on humans.
D. The experiments on the rats are much the same on other animals.

[单项选择]This message is very important; Can you make sure that Helen ______ it
[A] get [B] got [C] gets [D] is getting

[单项选择]"Motherhood may make women smarter and may help prevent dementia(痴呆) in old age by bathing the brain in protective hormones," US researchers reported on Thursday.
Tests on rats show that those who raise two or more litters of pups do considerably better in tests of memory and skills than rats who have no babies, and their brains show changes that suggest they may be protected against diseases such as Alzheimer’s dementia (早老痴呆症). University of Richmond psychology professor Craig Kinsley believes his findings will translate into humans.
"Our research shows that the hormones of pregnancy (怀孕) are protecting the brain, including estrogen (雌激素), which we know has many neuroprotective (保护神经的) effects," Kinsley said.
"It’s rat data but humans are mammals just like these animals are mammals," he added in a telephone interview. "They go through pregnancy and hormonal changes."
Kinsley said he hoped public health officials and researchers would look to see if having
A. Baby rats.
B. Animals.
C. Old rats.
D. Grown-up rats.