Trong một phản ứng hạt nhân, có sự bảo toàn
A.khối lượng.
B.động năng.
C.số nuclôn.
D.số nơtron.

Phản ứng hạt nhân không tuân theo định luật bảo toàn
A.số nuclon.
B.khối lượng
C.năng lượng.
D.động lượng.

Cho phản ứng hạt nhân sau $ _{17}^{37}Cl+X\to n+_{18}^{37}\text{Ar} $ . Hạt nhân X là
A.$ _{1}^{1}H $.
B.$ _{2}^{4}He $.
C.$ _{1}^{3}T $.
D.$ _{1}^{2}D $.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
I went up to read Marian a story, but she was ______ asleep.
A.full
B.deeply
C.fast
D.well

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.
My aunt is a bit of a wet _____. She’s always spoiling everyone’s fun
A.sheep
B.rat
C.rag
D.blanket

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.
Peter was born and brought up in Hastings and knows it like the _____.
A.back of his hand
B.tip of the tongue
C.nose on his face
D.hair on his head

Choose the letter A, B, C, or D to indicate the correct answer to the following question. I just took it ________ that he’d always be available.
A.easy
B.into account
C.for granted
D.into consideration

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.
Everyone bosses me about at work, I’m nothing but a __________.
A.lame duck
B.general dogsbody
C.blue- eye boy
D.marked man

Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions.
I was already fed up with the job, but when the boss walked into my office and told me he expected me to work overtime that was the ________. I quit
A.final curtain
B.last waltz
C.end of the line
D.last straw

Choose the letter A, B, C, or D to indicate the correct answer to the following question. I caught the last bus by the skin of my ________.
A.neck
B.teeth
C.leg
D.mouth