Trees

Question 1

cactus cacti /ˈkæktaɪ/

Answer 1

xương rồng

Question 2

fungus fungi /ˈfʌŋɡiː/, /ˈfʌŋɡaɪ/, /ˈfʌndʒaɪ/

Answer 2

nấm

Question 3

grain
1.the small hard seeds of food plants such as wheat, rice, etc.; a single seed of such a plant
Russia sold 12 million tons of grain abroad last year.
America’s grain exports
The journal reports that eating whole grains protects against diabetes.
grain of something a few grains of rice
2. grain (of something) a small hard piece of particular substances
a grain of salt/sand/sugar
I got a grain of sand in my eye.
3.(used especially in negative sentences)
a very small amount
SYNONYM iota
There isn’t a grain of truth in those rumours.
If he had a grain of sensitivity he wouldn’t have asked her about her divorce.
*be/go against the grain
​to be or do something different from what is normal or natural
It really goes against the grain to have to work on a Sunday.
*take something with a grain of salt
(North American English)
(also take something with a pinch of salt British and North American English)
​used to warn somebody not to believe something completely
If I were you, I’d take everything he says with a grain of salt.