阅读理解。 Winter"s short days are more than cold. For many people, winter depression, the most common type of Seasonal Affective Disorder(SAD), is as much a part of the reason as hats and scarves (围巾). Winter serious SAD sufferers may need medical treatment. Those feeling a little ...
Scientists first became concerned about the ozone layer in the mid-1980s when a hole was discovered in the layer above Antarctica during the winter.The hole was caused by chemicals used in refrigerators and air conditioners.When these chemicals are sent out into the atmosphere,they produce gases...
asp 害怕 [translate] asreet sreet [translate] aLoyalty singing is nice 忠诚唱歌是好的 [translate] aWinter salt are placed in the back storage area, it should be stored separately together with the toxic chemicals. 冬天盐在后面贮存区,它安置应该与毒性化学制品一起分开地存放。 [translate] ...
However, during the winter, it is difficult to attract the animals to cameras hidden in snowy forests. A group of students heard about the problem and created a special device which 3 (test) deep in a snowy forest now. Their invention 4 (use) to send out a certain smell near the ...
aAfter a mild winter, expect a bumper crop of mosquitoes this year. The winged pests are known to bite some people more than others -- possibly attracted by body chemicals released by stress 在一个温和的冬天以后,今年期待蚊子大丰收。 飞过的虫更比其他知道咬住某些人 -- 由重音发布的身体化学制...
Earth's oceans also help regulate the planet's climate, absorbing heat in the summer and releasing it during the winter. And of course, those same oceans serve as a home for countless plants and animals. While no one argues against the importance of water to life on Earth, it's fair ...
Scientists first became concerned about the layer in the mid-1980s when a hole was discovered in the layer above Antarctica during the winter.The hole was caused in chemicals used in refrigerators and air conditioners.When these chemicals are sent out into the atmosphere, they produce gases that...
Historic covered bridges in the United States are under threat by the use of the modern technology GPS. 美国历史悠久的廊桥正受到现代 GPS 技术的使用的威胁。 GPS is short for Global Positioning System. The satellite system tells people who use map applications what roads to use to go from ...
However, an autumn-planted sugarcane crop has opportunity costs: a winter wheat crop cannot be cultivated, as it can prior to a spring-sown sugarcane crop. Soil organic matter (SOM) plays a significant role in the development of soil aggregates and soil improvement in any agricultural soil, ...
D.They are driven away or killed before winter arrives.(5)How do robot bees help the queen bee? AA.They help the queen lay more eggs.B.They bring the queen delicious food.C.They help build a new home for the bees.D.They stay the queen away from other bees. 答案...