35. Separate containers are used for individual specimens
A: A hand collecting
B: B using bait
C: C sampling ground litter
D: D using a pitfall trap
A: A hand collecting
B: B using bait
C: C sampling ground litter
D: D using a pitfall trap
举一反三
- Passage A: By containers made by concrete. B: By containers made by steel. C: By using reservoirs formed by dirt walls. D: By using reservoirs formed by wood.
- Before _____, the machine must be checked. A: being used B: using it C: being used to D: using
- I find it difficult to stop _______ my car. A: to used B: using C: used D: to using
- are _ for cutting things. A: Knife, used B: Knives, using C: Knife, using D: Knives, used
- He tried ______ a new microphone and was able to make himself heard. A: to use B: to be used C: to using D: using