1. [单选题]All of them try to use the power of the workstation ___ information in a more effective way.
A. presenting B． presented
B. beingpresented
C. topresent
2. [单选题]假种皮是珠心发育而来。( )
A. 正确
B. 错误
3. [单选题]植物的表皮细胞由一层不含质体的活细胞构成。( )
A. 正确
B. 错误
4. [单选题]According to the last paragraph, it is important to____________.
A. eat something for breakfast
B. be careful about what you eat
C. heat up food before eating it
D. eat calorie-controlled food
5. [单选题]------Poor Steve! I could hardly recognize him just now!------_______________, He has changed so much.
A. Never mind
B. No problem
C. Not at all
D. Me neither
