What does the professor mean where says this:
A: Results are tragic when airplanes strike birds.
B: Sightings of birds from aircraft are unusual.
C: Airplanes do not frighten away most birds.
D: There is little similarity between birds and jets.
A: Results are tragic when airplanes strike birds.
B: Sightings of birds from aircraft are unusual.
C: Airplanes do not frighten away most birds.
D: There is little similarity between birds and jets.
举一反三
- Cold doth not sting, 3)___________________: Cuckoo, jug-jug, pu-we, to-witta-woo! A: the pretty birds do sing B: the pretty bird does sing C: the pretty birds sing D: the happy birds do sing
- According to the passage, scientists have discovered that influenza viruses ______ . A: cause ill health in wild birds B: do not always cause symptoms in birds C: are rarely present in wild birds D: change when transferred from animals to man
- What does the Birds’ Nest refer to?_
- ____ birds are there in the tree? A: How much B: What C: How many D: Where
- ______ are the birds doing?—They are singing in the tree. A: Who B: What C: How D: Where