21. She was so ________ in her job that she didn‘t hear anybody knocking at the door.

A) attracted B) absorbed C) drawn D) concentrated

22. At first， the speaker was referring to the problem of pollution in the country， but halfway in her speech， she suddenly ________ to another subject.

A) committed B) switched C) favoured D) transmitted

23. Although I like the appearance of the house， what really made me decide to buy it was the beautiful ________ through the window.

A) vision B) look C) picture D) view

24. Cancer is second only ________ heart disease as a cause of death.

A) of B) to C) with D) from

25. The manager needs an assistant that he can ________ to take care of problems in his absence.

A) count on B) count in C) count up D) count out

21-25 BBDBA