人体血液的无机盐质量分数约为0.9%,研究表明,30亿年前原始海水的无机盐质量分数也约为0.9%。 下列观点不可取的是( )
A:人体血液仍然带有原始海水的某些印痕
B:人体血液和原始海水之间存在着某种尚未被认识的关系
C:人体血液和原始海水的无机盐的质量分数相同纯属巧合
D:人类的祖先可能是从原始海洋中的原始生命逐渐进化而来的
下面句子中与例句的意思相同的是( )
例句:我们都爱这造福于人类的绿叶。
用所给单词填空
(1)Sometimes we ____ food at home. (2)I ____ drinking milk. (3)We often ____ CCTV news at 7:00 in the evening. (4)I ____ the Internet once a day.(5)The results for “read English books”____ fun.(6)How often do you ____ to the English corner? (7)Everyone will____ you if you need any help.(8)The sun ____ once a day. (9)Walking can ____ you in good health.(10)I____ nine hours every night.