Plants in Desert
Only special plants can survive the terrible climate of a desert, for these are regions when the annual range of the soil temperature can be over 75℃. Furthermore, during the summer there are few clouds in the sky to protect plans from the sun’ s ray. Another problem is the fact that there are frequently strong winds that drive small, sharp particles of sand into the plants,earing and damaging them. The most difficult probiem for all forms of plant life, however, is the fact that the entire annual rainfall occurs during a few days or weeks in spring.
Grasses and flowers in desert survive from one year to the next by existing through the long, hot, dry season in the form of seeds. These seeds remain inactive unless the fight amount of’rain falls. If no rain falls, or if insufficient rain falls, they wait until the next year, or even still the next. Another factor that helps these plants to survive is the fact that their life cycl
A. Right
B. Wrong
C. Not mentioned
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{{B}}Calling for
Safe Celebrations This Fourth of July{{/B}} Last Fourth of July, Pete, a 14-year-old boy, was enjoying the lit-up skies and loud booms from the fireworks being set off in his neighborhood. Suddenly, the evening took a terrible turn. A bottle rocket shot into his eye, immediately causing him terrible pain. His family rushed him to the emergency room for treatment. As a result of the injury, Pete developed glaucoma and cataracts. Today, Pete has permanent vision loss in his injured eye because of his bottle rocket injury. June is Fireworks Eye Safety Awareness Month, and through its EyeSmart campaign the American Academy of Ophthalmology wants to remind consumers to leave fireworks to professionals. "There is nothing worse than a. Fourth of July celebrat A. They are harmless to children. B. They are considered safe by many people. C. They are a threat to the eyes. D. They can burn at very high degrees. [单项选择]世界上负责关税减让的国际经济组织是（ ）
A. 世界贸易组织 B. 世界银行 C. 国际货币基金组织 D. 联合国贸易和发展会议 [单选题] 某施工项目技术负责人从项目技术部提出的两个土方开挖方案中选定了拟实施的方案,并要求技术部队该方案进行深化。该项目技术负责人在施工管理中履行的管理职能是( )。
A.检查 B.执行 C.决策 D.计划 我来回答: 提交
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