There are also topic-related hashtags, such as#RealTimeChem(where people describe the chemistry they are up to) or#chemjobswhere someone is posting about an open position related to chemistry. The Royal Society of Chemistry even host a virtual conference on Twitter every year where thousands of...
用关系代词或关系副词将下列每对句子连成一个复合句(5%)小题1:The boy is my younger brother. He was here a minute ago.小题2:The old man is a professor. He teaches chemistry in a college.小题3:Beijing Hotel is near Tian An Men Square. The foreign visitors liv
My young professor was looking back at me with a boyish smile on his face. He had 7 dropped the textbooks he was carrying onto his desk. "Good morning!", he saidstill 8 . "I am glad to see everyone is 9 . Now let's get started." For the next hour I wasn't sleepy at all...