题目内容

如果气孔导度随二氧化碳浓度的升高而降低，而光合速率提高的话，植物的水分利用效率必然增加。()

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TASK TWO—EXPERIENCE
？For questions 18—22, match the extracts with the experience, listed A—H.
？For each extract, choose the experience stated.
？Write one letter (A—H) next to the number of the extract.
A I worked as a detective in a hotel.
B I passed the saving on to my customer.
C I helped customers to solve personal problems.
D I bought rubber cement in a hardware store.
E I worked as a clerk in a hardware store.
F Advertised featured customer-service should satisfy different needs.
G I handled complaint.
H I sold the product to customer with little discount.

根据现阶段研究，二氧化碳浓度的升高可能导致农作物减产。()

生态学是研究生物受到其周围环境影响后如何改变的科学。()

植物的光合作用受光强影响，光强越高光合作用越强，吸收的二氧化碳越多。()