1.
2.
3.
4.
A. chaos B. consume C. plentiful D. discharge E. evolutionarily F. extent G. freeze H. mechanism I. novel J. subsequently K. unstable |
Science in Images
Oyster mushrooms feature in cuisines around the world, but they should be off the menu for hungry worms -- which these delicious mushrooms will kill and eat. Now researchers finally know how they do it.
A study published in Science Advances details how oyster mushrooms use a particular poisonous substance to freeze and get rid of mushroom-eating roundworms called nematodes (线虫). The mushrooms, which grow on nutrient-poor dead wood, then
“Nematodes happen to be the most
The study team of geneticists, biochemists and biologists had previously found that oyster mushrooms release an unidentified poisonous substance that will somehow
For their new work, the researchers grew and analyzed samples of the mushroom’s tissue, finding no noticeable poison even when they broke it up. They reasoned that whatever was killing the worms must be a kind of
Before this study, “we underestimated the
1. The family hugged and smiled through misty eyes and then laughed.
2. My heart froze in my chest as I saw the tractor heading towards the motorway.
3. The curtains are about to open, and in a few minutes the action and dialogue will tell you the story.
The polar bear approached us,
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.