The main purpose of the text is to_____________.
A: convince the reader that vaccines are not as safe as many think
B: educate the reader on how vaccines are used and some of their dangers
C: educate the reader on the circumstances that would necessitates widespread vaccinations
D: present the method by which vaccines are used through the case of the smallpox vaccine
A: convince the reader that vaccines are not as safe as many think
B: educate the reader on how vaccines are used and some of their dangers
C: educate the reader on the circumstances that would necessitates widespread vaccinations
D: present the method by which vaccines are used through the case of the smallpox vaccine
举一反三
- What kind of vaccine is the DPT vaccine belong to? A: Protein vaccines B: Toxoid vaccines C: VLPs vaccine D: Polysaccharide vaccines
- Smallpox can be effectively prevented by _______. A: vaccines B: penicillin C: antibiotics D: vitamines
- The author's primary purpose in telling this story is to ________. ( ) A: make the reader understand some important scientific phenomena B: encourage the reader to learn some useful skills in doing experiments C: describe Prof. Oveges's extraordinary talent in teaching and his won D: discuss some effective teaching methods used by Professor Oveges
- According to the text, scientists are looking for new ways to give vaccines, such as
- The<br/>main purpose of ______ is to teach students to think for<br/>themselves. (educate)