All the teachers though ______ of hte hard-working students. A: highly B: many C: good D: more

中国大学MOOC: when did Scotland join the Union by agreement of hte English and Scottish parliaments?

下列四种氢化物中热稳定性最大的是（）。 A: HO B: HS C: HSe D: HTe

which of the following is NOT true about Britain? A: it used to be a powerful imperial country in the world. B: it plays an acitve role as a member in European Union. C: it is a developed country in the world. D: it used to be one of hte superpowers in the world.

下列各组物质沸点高低顺序中正确的是（）。 A: HI>HBr>HCl>HF； B: HTe>HSe>HS>HO； C: NH>AsH>PH； D: CH>GeH>SiH。