According to the lecturer, how widespread are insectivorous plants().
A. There are hundreds of varieties in the world.
B. They exist in 500 countries in the world.
C. They exist only in North America.
D. There are five different types throughout the world.
查看答案
What does an insectivorous plant get from an insect().
All of its nutrients.
B. Sensory bristles.
C. Nitrogen.
Digestive liquid.
设A为n阶对称矩阵，B为咒阶反对称矩阵，则下列矩阵中是反对称矩阵的是（）。
AB-BA
B. AB+BA
C. (AB)2
D. BAB
They are talking about ().
A. how to prepare for a new branch office
B. how to build a new company
C. how to sign contracts
D. how to run business
What is the topic of this passage().
A. Insects that feed on plants.
B. Animals that feed on insects.
C. Plants that use insects to survive.
D. Insects that are attractive to plants.
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