题库 题库

【单选题】

Plants are essential in an ecosystem because to other living creatures they are_______
  • A.our share of resources

  • B.a biological creature

  • C.a given area

  • D.the maintenance of the ecosystem

  • E.the source of food

  • F.various species

参考答案

查看答案

相关试题

多选题 "Poorer children" and "hungry people" are mentioned in Paragraph 2 to show_______. 查看答案
多选题 Geothermal resources, wind turbines, and hydropower facilities in Paragraph 4 cited as examples to illustrate that_______. 查看答案
单选题 请在第____处填上正确答案。 查看答案
单选题 请在第____处填上正确答案。 查看答案
单选题 Choset's snake robots could make more movements than the ones others developed. 查看答案
多选题 It can be learnt from what Radel says that_______. 查看答案
单选题 请在第____处填上正确答案。 查看答案
单选题 请在第____处填上正确答案。 查看答案
单选题 This was an unexceptionally brutal attack. 查看答案
单选题 请在第____处填上正确答案。 查看答案
多选题 The word "pageants" in paragraph 2 means: _______. 查看答案
单选题 请在第____处填上正确答案。 查看答案
单选题 Zenati tested the robot on people after using it in pigs. 查看答案
多选题 There was a delay in Radel's experiment because 查看答案
单选题 请在第____处填上正确答案。 查看答案
单选题 Plants are essential in an ecosystem because to other living creatures they are_______ 查看答案
单选题 I grabbed his arm and made him turn tolook at me. 查看答案
单选题 请在第____处填上正确答案。 查看答案
单选题 Snake robots could move in only four directions. 查看答案
单选题 I tried to detach myself the reality ofthese terrible events. 查看答案