单项选择题

Questions 11 to 13 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions.
What is the focus of the passage

A．Food engineering.
B．Water using of plants.
C．Photosynthesis of plants.
D．Carbon dioxide and plants.

<上一题目录下一题>

热门试题

单项选择题

单项选择题

Questions 11 to 13 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. What is the focus of the passage 您的浏览器不支持 audio 元素。