成人中最常见的颌骨骨髓炎感染途径为（）

A.牙槽脓肿

B.冠周炎

C.拔牙创感染

D.血行感染

E.牙周炎

SECTION A
In this section you will hear a mini-lecture. You will hear the lecture ONCE ONLY. While listening, take notes on the important points. Your notes will not be marked, but you will need them to complete a gap.filling task after the mini-lecture. When the lecture is over, you will be given two minutes to check your notes, and another ten minutes to complete the gap-filling task on ANSWER SHEET ONE. Use the blank sheet for note-taking.
ANSWER SHEET ONE
Complete the gap-filling task. Some of the gaps below may require a maximum of THREE words. Make sure the word(s) you fill in is (are) both grammatically & semantically acceptable. You may refer to your notes.

Aspects That May Facilitate Reading
Ⅰ. Determining your purpose
A. Reading for (1) ______: like reading the latest Harry Potty Novel(1) ______
B. Reading for information: like reading in a (n) (2) ______ of the library (2) ______
Ⅱ. Prior knowledge
A. An initial key in helping you (3) ______ (3) ______
—what the article will be about
—whether it will interest you
—whether it is familiar to you
B. A help for the reader to
—find some material easy to understand
—build his or her (4) ______ of the new text(4) ______
Ⅲ. Interest
A. providing you with an extra (5) ______ for reading (5) ______
B. making you care more about what the author has to say
Ⅵ. (6) ______ your progress (reading with a pencil)(6) ______
A. asking questions on headlines and rifles
B. noting words you don’t understand
C. (7) ______ ideas you like(7) ______
Ⅴ. Summarizing the main points
A. listing the (8) ______ of each paragraph (8) ______
B. lumping together paragraphs with similar ideas
C. putting key ideas into your own words
D. (9) ______ the common thoughts or thread (9) ______
Ⅵ. Mapping out the essay
A. creating a visual representation of the essay
B. having a picture of something in your mind in various shapes
e.g., lists, diagrams, (10) ______ (10) ______