Choose a word that has different stress pattern:provide listen receive believeA. provide B. listen C. receive D. believe
Diện tích hình phẳng giới hạn bởi các đường y = x – 1 +$\displaystyle \frac{1}{x}$lnx, y = x – 1, x = e là :A. $\displaystyle \frac{1}{2}$. B. $\displaystyle \frac{1}{3}$. C. $\displaystyle \frac{1}{8}$. D. $\displaystyle \frac{2}{3}$.
Tích phân $\displaystyle I=\int\limits_{1}^{2}{\frac{\ln x}{{{x}^{2}}}dx}$ bằngA. $\displaystyle \frac{1}{2}\left( 1+\ln 2 \right)$. B. $\displaystyle \frac{1}{2}\left( 1-\ln 2 \right)$. C. $\displaystyle \frac{1}{2}\left( \ln 2-1 \right)$. D. $\displaystyle \frac{1}{4}\left( 1+\ln 2 \right)$.
Choose the best answer for the following sentence:Ann's mother __________ when she came home late.A. worry B. worrying C. worried D. to be worried
Tích phân $I=\int\limits_{0}^{\pi }{(x+2)cos2xdx}$ bằngA. $0.$ B. $-\frac{1}{4}.$ C. $\frac{1}{2}.$ D. $\frac{1}{4}.$
Tích phân $I=\int\limits_{0}^{\frac{1}{\sqrt{3}}}{\frac{{{x}^{8}}}{{{({{x}^{4}}-1)}^{2}}}dx}$ bằngA. $\frac{1}{\sqrt{3}}+\frac{1}{4}\ln \frac{\sqrt{3}-1}{\sqrt{3}+1}+\frac{\pi }{12}-1.$ B. $\frac{1}{\sqrt{3}}+\frac{1}{4}\ln \frac{\sqrt{3}-1}{\sqrt{3}+1}+\frac{\pi }{12}.$ C. $\frac{1}{\sqrt{3}}+\frac{1}{4}\ln \frac{\sqrt{3}-1}{\sqrt{3}+1}+\frac{\pi }{12}-12.$ D. $\frac{1}{\sqrt{3}}+\frac{1}{4}\ln \frac{\sqrt{3}-1}{\sqrt{3}+1}+\frac{\pi }{12}-2.$
Tích phân $I=\int\limits_{0}^{\frac{\pi }{4}}{\frac{\cos x}{{{(\sin x+\cos x)}^{3}}}dx}$ có giá trị bằngA. $\frac{3}{8}.$ B. $-\frac{3}{8}.$ C. $\frac{8}{3}.$ D. $-\frac{8}{3}.$
Cho tích phân $I=\int\limits_{0}^{\frac{\pi }{4}}{(1+\frac{1}{{{\cos }^{2}}x})dx}=a.\pi +b.$ Khi đó tổng a+2b bằngA. $\frac{9}{2}.$ B. $9.$ C. $\frac{9}{4}.$ D. $\frac{9}{8}.$
Choose one sentence that has the same meaning to the root one:By the time we arrived, all the students in my class had left.A. All the students in my class had left before we arrived. B. All the students in my class were leaving when we arrived. C. All the students in my class was leaving when we were arriving. D. After we arrived, all the students in my class had left.
Choose the word that has the underlined part pronounced differently from the rest:admission television tension commissionA. admission B. television C. tension D. commission
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