To maintain homeostasis, the ________of hormones must be turned on and off as needed.
A: seduction
B: selection
C: secretion
D: sensation
A: seduction
B: selection
C: secretion
D: sensation
C
举一反三
- It is cold in the room. They ________ the heating. A: must have turned off B: must turn off C: can’t have turned off D: may turn off
- Hormones play important roles in maintaining homeostasis – fluid and electrolyte, aid-base and energy balances.
- It is cold in the room. They ____ have turned off the heating. A: must B: can C: mustn’t D: can’t
- All the lights before we left the office. A: has been turned off B: have turned off C: had been turned off D: had turned off
- Which of the following is not an accurate statement? A: Hormones are chemical messengers that travel to target cells through the circulatory system B: Hormones often regulate homeostasis through antagonistic functions C: Hormones of the same chemical class usually have the same function D: Hormones are often regulated through feedback loops
内容
- 0
Their performance _____ to be a great success. A. turned awayB. turned off C. turned outD. turned down A: A. turned away B: B. turned off C: C. turned out D: D. turned down
- 1
The office building will be _____ a library. A: turned off B: turned on C: turned up D: turned into
- 2
I thought I ____ the light, but it is still turn on. A: had turned off B: was turning off C: have turned off D: would turn off
- 3
I forget ______ the light in the office, so the lights in the office are still on. A: turning off B: to turn off C: having turned off D: turned off
- 4
Human perception is usually thought of as a three-step process of （）, organization, and interpretation. A: needs B: sensation C: interpretation D: selection