W: Can we leave the lab now, teacherM. No, you must tidy the lab before you leave. When can the student leave(). A: The student can’t leave unless he has put everything back in the cupboard. B: The student can leave after he turns off the electricity. C: The student can leave after he has tidied the lab.

W: Hello, Mr. Jones. This is Betty Smith.M: Hello, Betty.W: May I speak to my husbandM: John is in the lab now, Betty. I’ll tell him to call you at home. Where is the woman’s husband（） A: In the lab. B: In the classroom. C: At home.

The students are ________ with these two famous scientists in the lab.

28. The building over there is a library, _______ standing our lab.

“电子学实验室”的英文是？ A: electronic lab B: electronics lab C: electron lab D: electrical lab

英译汉：Students and faculty in the university have free access to the computer lab.

The<br/>teaching building is across ________ the lab. A: at B: in C: from D: on

Lab的色彩域与RGB的色彩域、CMYK色彩域相比较，结果是（）。 A: Lab>RGB>CMYK； B: Lab<RGB＝CMYK； C: Lab>RGB＝CMYK； D: Lab＝RGB>CMYK。

The<br/>teaching building is across ________<br/>the lab. A: at B: in C: from D: on

Nobody but Sam and Tom______in the lab. A: are B: have been C: were D: is