97免费在线观看视频,亚洲综合自拍网,黄色毛片免费观看,热久久综合网,免费看日产一区二区三区狠狠操av,久久久涩涩涩,在线精品免费视频,人人插天天干,久久91精品国产91久久

<ins id="jlugl"></ins>

<pre id="jlugl"><acronym id="jlugl"><cite id="jlugl"></cite></acronym></pre>

<dd id="jlugl"></dd>

單項選擇題

It was well known that Thomas Edison（）the electric lamp.

A.invented
B.discovered
C.found
D.developed

你可能感興趣的試題

單項選擇題

After stopping for a few minutes, the bus moved（）to its next stop.

A.forward
B.off
C.with
D.on

單項選擇題

The teacher spoke so fast that it was hard for the students to（）what he was saying.

A.take in
B.take out
C.take up
D.take over

<pre id="okojc"><legend id="okojc"></legend></pre><sup id="okojc"><pre id="okojc"><div id="okojc"></div></pre></sup>

<ins id="okojc"></ins>

<code id="okojc"><strong id="okojc"></strong></code>
<pre id="okojc"><acronym id="okojc"></acronym></pre><blockquote id="okojc"><acronym id="okojc"></acronym></blockquote>

<em id="okojc"></em>