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【多选题】
以下物质具有抑制机体对非血红素铁吸收的有哪些?
A.
维生素C
B.
植酸与草酸
C.
膳食纤维
D.
多酚类化合物
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举一反三
【简答题】设有向量组 ,证明 构成 的一组基,并求向量 在这组基下的坐标.
【简答题】passage 2.mp3: In this part, you will hear a passage. At the end of the passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, y...
【单选题】passage 1.docx passage 2.docx 1 Why would poor people rank their relationships according to their importance?
A.
A They want to find delight in relationships.
B.
B They rely on others to get by.
C.
C They hope to be bound to others closely.
D.
They have limited resources at hand.
【单选题】Question 28 From the list below choose the most suitable title for Reading Passage 2. Write the appropriate letter A-E in box 28 on your answer sheet.
A.
Environmental management
B.
Increasing the world's food supply
C.
Soil erosion
D.
Fertilisers and pesticides - the way forward
E.
Farm subsidies
【单选题】Questions 19 to 21 are based on the passage you have just heard. passage 2.mp4
A.
19.A) Space exploration has serious consequences.
B.
B) India has many space exploration programs.
C.
C) There is quite a lot to learn about the moon.
D.
D) A lot of garbage has been left on the moon.
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