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【單選題】
一位科學家做了如下實驗：將水綿（絲狀綠藻）放在暗處，一束白光通過棱鏡再投射到水綿的葉綠體上，這時好氧性細菌將明顯聚集在（ ）
A.
紅光的投影區(qū)域內(nèi)
B.
紅光和綠光的投影區(qū)域內(nèi)
C.
紅光和藍紫光的投影區(qū)域內(nèi)
D.
黃光和橙光的投影區(qū)域內(nèi)
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舉報參考答案：
舉一反三
【單選題】Where can you find a gift idea to improve your mother’s sleep?
A.
In Gift No. 1.
B.
In Gift No. 2.
C.
In Gift No. 3.
D.
In Gift No. 4.
【單選題】The underlined expression cutting edge in Paragraph 3 is closest in meaning to ______.
A.
advanced technique
B.
sharpening tool
C.
effective rule
D.
dividing line
【單選題】Buying gifts from Presents for Purpose allows mothers to________.
A.
enjoy good sleep
B.
give others help
C.
get extra support
D.
be well-organized
【單選題】What are you advised to do for your mother at doctor's visits?
A.
Be with her.
B.
Buy medicine.
C.
Take notes.
D.
Give her gifts.
【單選題】Why was Jennifer watched in an online exam?
A.
To correct her typing mistakes.
B.
To find her secrets in the room.
C.
To pr her form slowing down.
D.
To keep her from dishonest behaviors.
相關(guān)題目：
【單選題】Where can you find a gift idea to improve your mother’s sleep?
A.
In Gift No. 1.
B.
In Gift No. 2.
C.
In Gift No. 3.
D.
In Gift No. 4.
【單選題】The underlined expression cutting edge in Paragraph 3 is closest in meaning to ______.
A.
advanced technique
B.
sharpening tool
C.
effective rule
D.
dividing line
【單選題】Buying gifts from Presents for Purpose allows mothers to________.
A.
enjoy good sleep
B.
give others help
C.
get extra support
D.
be well-organized
【單選題】What are you advised to do for your mother at doctor's visits?
A.
Be with her.
B.
Buy medicine.
C.
Take notes.
D.
Give her gifts.
【單選題】Why was Jennifer watched in an online exam?
A.
To correct her typing mistakes.
B.
To find her secrets in the room.
C.
To pr her form slowing down.
D.
To keep her from dishonest behaviors.
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