2020屆高三英語A land of diversity教案
through the "green telephone lines", subterranean insects can also communicate with a third party, namely the natural enemy of caterpillars (毛蟲). parasitic wasps (寄生蜂) lay their eggs inside aboveground insects. the wasps also benefit from the signals sent by the leaves, as these help them find more insects for their eggs.
the communication between subterranean and above- ground insects has only been studied in a few systems. it is still not clear how widespread this phenomenon is, say the researchers.
1. how do subterranean and aboveground insects communicate with each other?
a. by sending signals through the leaves.
b. by giving off particular smells.
c. by making soft and beautiful sounds.
d. by the signals sent by parasitic wasps.
2. after finding a plant occupied by root-eating insects, aboveground insects will usually ________.
a. send out warning signals
b. compete for the same plant
c. choose to leave the plant
d. fight with the root-eating insects
3. aboveground insects will develop more quickly if their food plants ________.
a. are often visited by parasitic wasps
b. are not occupied by mot-eating insects
c. have more green leaves
d. have more subterranean insects
4. what does the underlined part "a third party' in paragraph 4 include?
a. aboveground insects. b. root-eating insects.
c. caterpillars. d. parasitic wasps.
5. what would be the best title for the passage?
a. communication between different insects
b. how do animals avoid competition?
c. insects use plants as telephones
d. when plants have subterranean residents
答案：
荷蘭科學家研究發現：地下昆蟲可以通過植物的葉子釋放化學物質，作為信號對地上昆蟲進行警告，從而避免對同一植物的競爭。
1. a 細節理解題。根據第一段第二句subterranean insects issue chemical warning signals through the leaves of the plant可知，地下昆蟲能通過植物的葉子發出一種化學物質，作為信號對地上昆蟲進行警告。故選a。
2. c 細節推理題。第二段第一句aboveground, leaf-eating insects ... root-eating insects提到，地上的昆蟲更喜歡沒有被地下昆蟲占領的植物。聯系本段最后一句this messaging makes ... for the same plant可知，當地上昆蟲發現植物已經被地下昆蟲占領時，它們通常會選擇離開。