玻璃用密封胶固定后，黏合剂需要固化（）h。
A．3～4
B．6～8
C．8～10
参考答案：B
刺丝泡为下列动物中（）所特有。
A、眼虫
B、草履虫
C、变形虫
D、孢子虫
Tim is in good shape physically ______ he doesn't get much exercise.
A. if B. even though C. unless D. as long as
