Câu hỏi:
04/04/2020 280Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.
Orchids are unique in having the most highly developed of all blossoms, in which the usual male and female reproductive organs are fused in a single structure called the column. The column is designed so that a single pollination will fertilize hundreds or thousands, and in some cases millions, of seeds, so microscopic and light they are easily carried by the breeze. Surrounding the column are three sepals and three petals, sometimes easily recognizable as such, often distorted into gorgeous, weird, but always functional shapes. The most noticeable of the petals is called the labellum, or lip. It is often dramatically marked as an unmistakable landing strip to attract the specific insect the orchid has chosen as its pollinator.
To lure their pollinators from afar, orchids use appropriately intriguing shapes, colors, and scents. At least 50 different aromatic compounds have been analyzed in the orchid family, each blended to attract one, or at most a few, species of insects or birds. Some orchids even change their scents to interest different insects at different times.
Once the right insect has been attracted, some orchids present all sorts of one-way obstacle courses to make sure it does not leave until pollen has been accurately placed or removed. By such ingenious adaptations to specific pollinators, orchids have avoided the hazards of rampant crossbreeding in the wild, assuring the survival of species as discrete identities. At the same time they have made themselves irresistible to collectors.
The word "their" in line 10 refers to.
Đáp án chính xác
Câu hỏi trong đề:
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Trả lời:
Giải bởi Vietjack
Đáp án A
Thông tin: Some orchids even change their scents to interest different insects at different times.
Dịch nghĩa: Một số loài hoa lan thậm chí thay đổi mùi hương của chúng để làm quan tâm đến các loài côn trùng khác nhau vào những thời điểm khác nhau.
Như vậy từ “their” là tính từ sở hữu tương ứng của danh từ “some orchids”. Phương án A. orchids = các loài hoa, là phương án chính xác nhất.
B. birds (n) = các loài chim
C. insects (n) = các loài côn trùng D. species (n) = các loài sinh vật
Nhà sách VIETJACK:
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