【单选题】Conversation 1 15.A. Making a sales plan C. Doing a market survey B. Preparing an annual report D. Writing a business letter
B.
Preparing an annual report
D.
Writing a business letter
【单选题】A survey was carried out on the sleep time of students in middle schools, ______ were surprising.
【单选题】A survey was carried out on the death rate of new born babies in that region, ______ were surprising.
【单选题】A survey was carried out on the death rate of new-born babies in that region, the results of which were surprising.
A.
一项关于新生儿死亡率的调查在那个地区被展开,结果令人惊讶。
B.
一项关于那个地区新生儿死亡率的调查被执行,结果令人惊讶。
D.
在那个地区进行了一次新生儿死亡率调查,结果令人惊讶。
【判断题】蕨类植物既属于颈卵器植物,又属于维管植物。
【单选题】对于被水汽饱和的湿空气,下列说法正确的是( )
A.
该湿空气的湿球温度介于干球温度和露点温度之间