[单项选择]

Some desert animals can survive the summer heat and dryness because they are very unusual. The camel, for example, can experience and bear an increase in the temperature of its body and its blood of 9°C without anything bad happening to it. In addition, it can drink a lot of water at one time; then store enough water in parts of its body to supply its needs for two weeks or more. The kangaroo rat, on the other hand, gets all the water it needs from water that it produces when it breathes. However, most animals need to maintain a fairly constant body temperature, and will die if it rises more than 5°C. Therefore, they need to find some way to stay away from the heat of the summer sun. Nor can many animals either store or produce water in their bodies, as the camel and kangaroo rat can. So they must find ways to keep their bodies from losing water because of the heat. Because very few desert animals can survive the high temperature of a typical summer’s day, most of t
A. Desert Animals and Insects
B. Kangaroo Rat and Camel
C. The Climate in Desert
D. Desert Plants

[单项选择]

Some desert animals can survive the summer heat and dryness because they are very unusual. The camel, for example, can experience and bear an increase in the temperature of its body and its blood of 9°C without anything bad happening to it. In addition, it can drink a lot of water at one time; then store enough water in parts of its body to supply its needs for two weeks or more. The kangaroo rat, on the other hand, gets all the water it needs from water that it produces when it breathes. However, most animals need to maintain a fairly constant body temperature, and will die if it rises more than 5°C. Therefore, they need to find some way to stay away from the heat of the summer sun. Nor can many animals either store or produce water in their bodies, as the camel and kangaroo rat can. So they must find ways to keep their bodies from losing water because of the heat. Because very few desert animals can survive the high temperature of a typical summer’s day, most of t
A. a very low body temperature
B. only a little change in body temperature
C. a big increase in body temperature
D. a constant change in body temperature

[填空题]Animals can not survive some catastrophic events such as starvation, disease, or competition from other species.

[单项选择]Animals can only survive（）the living environment is similar to the earth.
A. which
B. whose
C. what
D. where

[填空题]In the summer heat, it’s easy to develop the embarrassing problem of body odor if you’re not careful. Bacteria live all over our skin, and their waste is what causes body odor.
Follow these simple tips to keep the bacteria away:
1. Use antibacterial body soap.
Antibacterial soaps kill the odor-causing bacteria on the body. If you haven’t been using one, chances of the bacteria levels on your body are quite high, so get their numbers under control by bathing with your new soap twice a day for two weeks. After levels are back to normal, once a day is enough to keep them in check.
2. Change clothes and bath towels frequently.
Any worn clothing or used bath towel will produce bacteria. Change your clothes daily, especially socks and underwear, unless you want yesterday’s bacteria joining forces with today’s. Also, keep in mind that cotton clothes are better at hiding body odor, as they absorb smelly sweat rather than letting it evaporate into the air.

[填空题]In the summer heat, it’ s easy to develop the embarrassing problem of body odor if you’ re not careful. Bacteria live all over our skin, and their waste is what causes body odor.
Follow these simple tips to keep the bacteria away:
1. Use antibacterial body soap.
Antibacterial soaps kill the odor-causing bacteria on the body. If you haven’ t been using one, chances of the bacteria levels on your body are quite high, so g~ their numbers under control by bathing with your new soap twice a day for two weeks. After levels are back to normal, once a day is enough to keep them in check.
2. Change clothes and bath towels frequently.
Any worn clothing or used bath towel will produce bacteria．Change your clothes daily，especially socks and underwear，unless you want yesterday’s bacteria joining forces with today’s．Also，keep in find that cotton clothes are better at hiding body odor，as they absorb smelly sweat rather than letting it evaporate into the air．
3．Eat light．