We should try to _____ our goals through hard work. Which word is the most appropriate?
attain
confront
hibernate
temperate
The cell membrane is a semi-__________ structure that controls the entry and exit of substances.
The __________ (生理的)processes in our body work together to keep us healthy.
The _____ in the body plays a crucial role in maintaining certain functions. Which of the following words can best fill in the blank?
hibernate
morphological
gland
glycerin
A ______ injection can quickly end a suffering animal's life.
The ______ climate of the desert is a harsh environment for most living things.
The __________ (fascinate) phenomenon attracted the attention of many scientists.
The food was so __________ that it left oil stains on the plate.
The _____ temperature of the room is quite comfortable. Which word can be used to describe the temperature?
glacier
latitude
amphibian
ambient
The fox dug a ______ to have a safe place to sleep and store food.
The mountaineer carefully stepped over the ______ in the ice.