备考攻略
ACT阅读考试词汇常考解析
2018.12.25
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相信大家在ACT阅读考试中词汇是一大难点，那么小编就告诉大家ACT阅读考试词汇常考的都有哪些，帮助大家在ACT阅读考试中取得高分。
在act阅读考试自然科学的文章中，最常考的话题有三个，分别是：
animal，plant，和astronomy
这里给大家列出了这三个话题中最常考的高频词汇。
Plant
Bark：tough protective covering of the woody stems
63C NS Line 39
The giant redwood has cinnamon-coloured bark, which may grow to a massive 18 in/45 cm thick.
Grove: a small growth of trees
63C NS Line 5
Today they are a truly relict species, occurring only in isolated groves on the western slopes of the Sierra Nevada in California.
Pollen: a fine powder produced by flowers
61B NS line 10
Young workers of five days of age or more who have been feeding heavily on pollen produce for the larvae a protein-rich substance called bee milk or royal jelly.
Sap: a watery solution of sugars, salts, and minerals that circulates through a plant
65E NS Line10
They are large—and noisy一for insects that feast on sap: the smallest are 10 millimeters (just under half an inch) long, the largest 100 millimeters (four inches)
Stem: a slender structure that supports a plant
65E NS Line 12
Female cicadas lay their eggs in the stems of plants or in trees.
Trunk: the main stem of a tree
63C NS Line 13
The largest trunk of any redwood is found on a tree in Alder Creek, which averages 53 ft/16 m around its base.
Animal
Abdomen: belly
65E NS line 56
A click from the rib of a tymbal produces high sound pressures within the cicada's abdomen.
Anatomy: the branch of morphology that deals with the structure of animals
66C NS line 78
Neanderthals started thinking about these people in terms of their behavior and not just their anatomy.
Burrow: a hole in the ground made by an animal for shelter
Astronomy
Crater: a bowl-shaped geological formation at the top of a volcano
OG3 NS Lline33
“The basic idea,” J Melosh says, “is that an impact doesn’t just open a crater. With high velocities, the projectile vaporizes and expands into the atmosphere.”
Lava：rock that in its molten form (as magma) issues from volcanos
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