The Sina Microblog provides a good ________for those who want to express their opinions and exchange their ideas withothers

Had he spent more time practicing speaking English before, he _______ able to speak it much better now.

Which do you like , a pear or an orange— An orange.

e grapes look really beautiful.— They _______! See the price $3.99 a pound. Very expensive, aren’t they!

依次填入下列各句横线处的成语，最恰当的一组是（ ）①安理会正在表决第二套关于制裁伊朗的法案，伊朗对第一套法案________，而继续它的铀浓缩计划。②一些政府部门缺乏“大数据思维”，或是把自己掌握的丰富信息________，或是缺乏迈开步子的勇气，摆脱不了“数据小农意识”。③近日，嘉定高速大队民警在巡逻过程中，查获一起严重违法行为。高速匝道倒车，险象环生，交警鸣笛示警，司机却仍________。