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【简答题】
在一项探究土壤细菌对植物 X 生长效应影响的实验中 , 将多株生理条件相同的植物 X 随机均分为甲、 , 将等量的 A 、 B 两种细菌分别加入培养两组植物 X 的土壤中 , 培养条件相同且适宜。统计植物 X 在实验的第 1 天和第 60 天的平均高度 , 结果如图 所示 : 回答下列问题 : ( 1 ) 已知细菌 A 、 B 均需从植物根部获取营养进行繁殖 , 据此分析 , 细菌 A 或 B 在土壤中分布呈现的空间特征是 第 1 空 。 ( 2 ) 已知细菌 A 、 B 与植物 X 的种间关系是寄生或互利共生 , 现需要增加 1 组实验 ( 丙组 ) 才能更准确地判断细菌 A 、 B 与植物 X 的关系 , 丙组实验的处理方式是 第 2 空 。若结合丙组实验结果能证明 A 、 B 两种细菌与植物 X 之间属于不同的种间关系 , 则丙组实验结果是 第 3 空 。
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【单选题】Yuan Longping looks like a farmer in these ways: (多选)
A.
he can't speak English
B.
his face and arms are sunburnt
C.
his body is slim and strong
D.
he lives in the countryside
【单选题】How to keep healthy?
A.
Adults should get about two hours of aerobic exercise each week.
B.
Adults can do the exercises such as playing basketball, swimming and distance running.
C.
Lifting weights, or doing sit-ups and push-ups are permitted.
D.
All of the above are right.
【多选题】Yuan Longping looks like a farmer in these ways: (多选)
A.
he can't speak English
B.
his face and arms are sunburnt
C.
his body is slim and strong
D.
he lives in the countryside
【单选题】In this section, there are 10 incomplete sentences. You are required to complete each one by deciding on the most appropriate word or words from the 4 choices marked A), B), C), and D). 25. Last year ...
A.
worse
B.
shorter
C.
younger
D.
slower
【单选题】How to keep healthy physically?
A.
Do not smoke and drink alcohol.
B.
Do regular exercise and have a balanced diet.
C.
Do more walking, running and swimming.
D.
Eat less fat, oil, sweets and more nutritious food.
【单选题】His health______, my father retired from the business last year.
A.
fails
B.
was failed
C.
failing
D.
failed
【单选题】Which of the following is NOT among the functions of the communications dust according to the passage?
A.
To monitor light.
B.
To change color.
C.
To show movies.
D.
To play music.
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