Các hình thức sinh sản ở sinh vật gồm?

A. Sinh sản vô tính và sinh sản hữu tính.

B. Sinh sản bằng hạt và sinh sản bằng cành, lá.

C. Sinh sản bào tử và nuôi cấy mô.

D. Sinh sản giâm chiết ghép nuôi cấy mô và gieo hạt

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the

correct word or phrase that best fits each of the numbered blanks. Fill in the appropriate word in question 25

WILLIAM THE HERO!

Brave William Baldock, who is six years old, is a hero after helping his mother when she fell downstairs. William quickly rang for an ambulance when he discovered his mother had broken her leg. In spite of being frightened, he (23) ________ the emergency services what had happened and answered all the questions they asked him. He also telephoned his father at work, and then his grandmother, to explain what he had (24) _________. While waiting for these people to come, William looked after his 18–month–old sister. When ambulance man Steve Lyn went to the house, he was amazed. 'It's great that a young boy of six knew the right number to dial, and was able to give us the correct information. (25) ________ of William's quick thinking, we were able to (26) ________ there immediately."

Mrs. Baldock left hospital yesterday, very (27) ________ to both William and the ambulance service.

A. Since

B. In spite

C. Because

D. Instead

Thành phần nào sau đây không thuộc opêron Lac?

A. Vùng khởi động của gen điều hòa

B. Gen Y của opêron

C. Vùng vận hành của opêron

D. Gen Z của opêron

Dễ thương quá !