机动车在冰雪路面上行驶时,应与前车保持约()以上的安全间距。
A、30米
B、50米
C、70米
D、90米
参考答案:B
下列关于葡萄糖进入人体的利用情况的叙述中,不正确的是( )
A.氧化分解,释放能量
B.合成肝糖元,暂时贮存
C.转变为脂肪贮存
D.转变为维生素
Which of the following statements is not true().
A. East Timor is an island.
B. East Timor used to belong to Indonesia.
C. East Timor has a p economy because of its tourism development.
D. East Timor will not develop its tourism at the expense of its natural beauty.