无码高清视频|成人自拍视频|欧美成人午夜无码A片秀色直播|草美女视频网站|美女被操网站在线观看

<progress id="vkvxl"><th id="vkvxl"><xmp id="vkvxl"></xmp></th></progress>

<ruby id="vkvxl"><xmp id="vkvxl"></xmp></ruby>

<pre id="vkvxl"><strong id="vkvxl"></strong></pre>

單項(xiàng)選擇題

The United Nations Conference on Global Environment, which took place earlier this year in Vienna, was a very（） meeting.

A.productive
B.communicative
C.aggressive
D.protective

你可能感興趣的試題

單項(xiàng)選擇題

We watched the plane（）behind the clouds.

A.disappearing
B.disappeared
C.diving
D.dived

單項(xiàng)選擇題

Pipes made of plastic are now widely used in building as they are light and do not become （）in water.

A.ripe
B.instant
C.rotten
D.mature

<pre id="w0cda"><strong id="w0cda"></strong></pre>

<ruby id="w0cda"><xmp id="w0cda"></xmp></ruby>