Choose the word(s) CLOSEST in meaning to the underlined word(s): Birds are at their most vulnerable when they leave their nests and find food on their own.
A.strong
B.susceptible
C.powerful
D.invincible
* Đáp án
B
* Hướng dẫn giải
Kiến thức: từ đồng nghĩa
Ta có "Vulnerable (a) = susceptible (a): dễ bị tổn thương.”