某涉及国家安全的投资项目，施工单项合同估算价为8000万元人民币，该项目（)。A．必须公开招标B．必须

ys there when they try to use the keyboard joystick. Which of the following components will MOST likely need to be replaced to resolve the issue？（）

A. Touchpad

B. Motherboard

C. Keyboard

D. External pointing device

A. Biometric device

B. Mouse

C. Camcorder

D. Infrared scanner

Which of the following statements is NOT true of the device, according to Paragraph 4？

A．It is filled in with gravel.

B．It consists of a steel pipe.

C．It is dropped into a borehole filled in with gravel.

D．It is connected to a sensor on the surface.

Which of the following statements best describes a laser？

A．A device for stimulating atoms and molecules to emit light.

B．An atom in a high-energy state.

C．A technique for destroying atoms or molecules.

D．An instrument for measuring light waves.

Which of the following is true about the device mentioned in the passage？

A．It has a large gear and a smaller gear.

B．It's easy to use, but difficult to move.

C．It's quite cheap.

D．It's still being tested.

A．Metaphor

B．Parallelism

C．Metonymy

D．Simile

Which of the following is TRUE of alternative certification (AC)？

A．Many states have offered it since the 1980s.

B．Schools of education and teachers' unions opposed it.

C．AC offers a flexible training program for new teachers.

D．New recruits will require a university degree in education.

A．Metaphor

B．Hyperbole

C．Repetition

D．Alliteration

ting device？

A．Emphasis.

B．Contrast.

C．Exaggeration.

D．Interrogation.

Which of the following statements is NOT true of the device,according to paragraph 4？

A.It is filled in with gravel

B.It consists of a steel pipe

C.It is dropped into a borehole filled in with gravel

D.It is connected to a sensor on the surface