用温度计测量烧杯水中的温度,如图所示的几种做法中正确的是 [ ]
A、
B、
C、
D、
答案:C
.While the Internet is creating a global village and bringing people together, we are _____ producing a society where people spend their lives in front of a screen, and become unable to communicate face—to-face.
A.in the process
B.in progress
C.in danger of
D.in my opinion
锥体束受累各种深反射受何影响()
A.减低
B.增高
C.不变
D.可以增高或降低
E.以上均不正确