Biến dị tổ hợp là
A.sự tổ hợp lại các tính trạng của P làm xuất hiện các kiểu hình khác P.
B.sự ảnh hưởng các yếu tố bên ngoài cơ thể.
C.sự xuất hiện tổ hợp mới giống các tính trạng của bố.
D.sự xuất hiện tổ hợp mới giống các tính trạng của mẹ.

Hình thức sinh sản tạo ra nhiều biến dị tổ hợp ở sinh vật là 
A.sinh sản hữu tính.
B.sinh sản nẩy chồi.
C.sinh sản vô tính.
D.sinh sản sinh dưỡng.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to the following question.
We are _______ for a picnic tomorrow. There are a lot of things to do now.
A.arranging
B.looking
C.preparing
D.expecting

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to the following question.
What is her name? -It’s _____________ Elise _______ Elouse.
A.whether/ or
B.neither/ nor
C.both/ and
D.either/ or

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to the following question.
Summer camp offers ___________ swimming suits ___________ camping tools.
A.neither/ nor
B.either/ or
C.not/ but
D.not only/ but also

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to the following question.
I'll take my vacation __________ in July ____________ in August.
A.either/ or
B.neither/ nor
C.not only/ but also
D.not/ but

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to the following question.
Neither the local environmentalists nor the mayor ______ a plan that will satisfy everyone.
A.is
B.has
C.are
D.have

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to the following question.
_____ Long _____ his brother was at the party last night. They were both busy.
A.Both/ and
B.Either/ or
C.Neither/ nor
D.Neither/ or

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to the following question.
Bill took not only a French class, ________ a Japanese class.
A.but too
B.too
C.but also
D.and

Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to the following question.
- I can’t see the stage very well from here.
- ________.
A.Neither can’t I.
B.Neither I can
C.I can’t, either
D.So do I