_____ I know the money is safe, I shall not worry about it. A. Even though B. Unless C. As long as D. While
地球与太阳的平均距离大约为150000000km.将150000000用科学记数法表示应为( ) A.15×107 B.1.5×108 C.1.5×109 D.0.15×109
判断下列函数的奇偶性: (1)f(x)=|x+1|-|x-1|;(2)f(x)=(x-1)·;(3)f(x)=;(4)f(x)=
请从所给的三个词语中,选出一个最符合语境的填写在横线上。 ( 1)一代代建设者把青春播撒在祖国大地上,孕育出点染江山的葱茏绿意,换来了我
He never reads anything ______ is not worth reading. A. that B. as C. who D. which
下列从左到右的变形,是因式分解的是( )A.2(a—b)=2a—bB.m2—1=(m+1)(m—1)C.x2—2x+1=x(x—2)+1D.a(a—b)(b+1)=(a2—ab)(b+1)
根据短文内容,用方框中所给的词填空。 in, is, friends, same, have, eyes, his, man, old, name Hello! My 81 is Wang Bin. I’m a student. Look at the ph