A.\(9,18\,\,cm\)
B.\(14,2\,\,cm\)
C.\(9,58\,\,cm\)
D.\(7,5\,\,cm\)

A.\(4\sqrt 2 \)
B.\( - 4\sqrt 2 \)
C.\(4\)
D.\(2\sqrt 2 \)

A.\(\left\{ \begin{array}{l}x = 1\\y = 1 - 2t\\z = 1 + t\end{array} \right.\)
B.\(\left\{ \begin{array}{l}x = 1\\y = 1 - t\\z = 1 - t\end{array} \right.\)
C.\(\left\{ \begin{array}{l}x = 1\\y = 1 - t\\z = 1 + 2t\end{array} \right.\)
D.\(\left\{ \begin{array}{l}x = 1\\y = 1 - t\\z = 1 + t\end{array} \right.\)

A.\(\dfrac{{32{a^3}\sqrt 5 }}{{15}}\)
B.\(\dfrac{{16{a^3}}}{{3\sqrt 5 }}\)
C.\(\dfrac{{32{a^3}}}{{\sqrt 5 }}\)
D.\(\dfrac{{8{a^3}\sqrt 5 }}{5}\)

A.11
B.13,9.
C.12
D.8,3.

A.Văn hóa Bắc Sơn (Lạng Sơn)
B.Văn hóa Đồng Đậu
C.Văn hóa Hòa Bình
D.Văn hóa Quỳnh Văn (Nghệ An)

A.
B.
C.
D.

A.fell
B.broke
C.made
D.dropped

A.turning
B.making
C.staying
D.taking

A.make
B.take
C.lay
D.hang