我并不是什么战士,但我有些固执。 无视传统观点,Mary Schweitzer设法将恐龙古生物学转变为分子科学。 图片来源:CYNTHIA MATTY-HUBER Mary Schweitzer在2017年搜寻恐龙的第一天并不顺利。夏季炙热的太阳下,该团队一直在干旱的牧场上寻找富含化石的地层,然而并未成功。...
1 : A: Where are Joe and Harry? B: ___ over ___. There/ there They're/ there Their/ there They're/ their 2 : Jean and Roger would love to visit Australia but ___ a few reasons why ___ not able to just now. there/ their there are/ there there are/...
can keep our core body temperatures pretty much constant regardless of what’s going on in the world around us. We do this by altering our metabolic(新陈代新的) rate, shivering or sweating. Keeping warm and staying cool take energy unless we are in...
many people are used to substituting their care for parents with money or gifts. While it is beyond dispute that material support can improve ones’ living standards, what those aged people need most is the mental satisfaction and love from their c...
5. The reason why employers are unwilling to keep older workers is that ___. [A] they are generally difficult to manage [B] the longer they work, the higher their pension [C] their pay is higher than that of younger ones [D]
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