Read the text below. For questions (38–42) choose the correct answer (A, B, C or D).

Scientific Progress

Despite warnings that it might set off a catastrophic chain reaction that could (38) ______ the Earth, scientists have (39) ______ created a miniature version of the Big Bang, without any observable ill effects. They were able (40) ______ a temperature of (41) ______ ten trillion degrees — a million times hotter than the centre of the sun — by (42) ______ together lead ions at incredible speeds in the Large Hadron Collider, a 27 km underground tunnel at the CERN (European Organization for Nuclear Research) facility near Geneva.

... a million times hotter than the centre of the sun — by (42) ______ together lead ions at incredible speeds in the Large Hadron Collider ...

Read the text below. For questions (38–42) choose the correct answer (A, B, C or D).

Scientific Progress

Despite warnings that it might set off a catastrophic chain reaction that could (38) ______ the Earth, scientists have (39) ______ created a miniature version of the Big Bang, without any observable ill effects. They were able (40) ______ a temperature of (41) ______ ten trillion degrees — a million times hotter than the centre of the sun — by (42) ______ together lead ions at incredible speeds in the Large Hadron Collider, a 27 km underground tunnel at the CERN (European Organization for Nuclear Research) facility near Geneva.

... a temperature of (41) ______ ten trillion degrees — a million times hotter than the centre of the sun ...

Read the text below. For questions (38–42) choose the correct answer (A, B, C or D).

Scientific Progress

Despite warnings that it might set off a catastrophic chain reaction that could (38) ______ the Earth, scientists have (39) ______ created a miniature version of the Big Bang, without any observable ill effects. They were able (40) ______ a temperature of (41) ______ ten trillion degrees — a million times hotter than the centre of the sun — by (42) ______ together lead ions at incredible speeds in the Large Hadron Collider, a 27 km underground tunnel at the CERN (European Organization for Nuclear Research) facility near Geneva.

They were able (40) ______ a temperature ...

Read the text below. For questions (38–42) choose the correct answer (A, B, C or D).

Scientific Progress

Despite warnings that it might set off a catastrophic chain reaction that could (38) ______ the Earth, scientists have (39) ______ created a miniature version of the Big Bang, without any observable ill effects. They were able (40) ______ a temperature of (41) ______ ten trillion degrees — a million times hotter than the centre of the sun — by (42) ______ together lead ions at incredible speeds in the Large Hadron Collider, a 27 km underground tunnel at the CERN (European Organization for Nuclear Research) facility near Geneva.

... scientists have (39) ______ created a miniature version of the Big Bang, without any observable ill effects.

Read the text below. For questions (38–42) choose the correct answer (A, B, C or D).

Scientific Progress

Despite warnings that it might set off a catastrophic chain reaction that could (38) ______ the Earth, scientists have (39) ______ created a miniature version of the Big Bang, without any observable ill effects. They were able (40) ______ a temperature of (41) ______ ten trillion degrees — a million times hotter than the centre of the sun — by (42) ______ together lead ions at incredible speeds in the Large Hadron Collider, a 27 km underground tunnel at the CERN (European Organization for Nuclear Research) facility near Geneva.

Despite warnings that it might set off a catastrophic chain reaction that could (38) ______ the Earth, ...

Read the text below. For questions choose the correct answer (A, B, C or D).

The Beak of the Toucan

Why does the toucan ______ ______ such an enormous beak? The answer, we learned in August, may be that it uses it ______ ______ body temperature. Infrared measurement ______ ______ just before sleep shows that the bird’s long beak — which can grow to ______ ______ of its body size — gets hotter, ______ ______ the bird uses it in the presleep cooling process. At other times, as the external heat rises, so too does the heat of the toucan’s beak, while its core body heat stays the same.

... ______ ______ the bird uses it in the presleep cooling process...

Read the text below. For questions choose the correct answer (A, B, C or D).

The Beak of the Toucan

Why does the toucan ______ ______ such an enormous beak? The answer, we learned in August, may be that it uses it ______ ______ body temperature. Infrared measurement ______ ______ just before sleep shows that the bird’s long beak — which can grow to ______ ______ of its body size — gets hotter, ______ ______ the bird uses it in the presleep cooling process. At other times, as the external heat rises, so too does the heat of the toucan’s beak, while its core body heat stays the same.

... which can grow to ______ ______ of its body size — gets hotter ...

Read the text below. For questions choose the correct answer (A, B, C or D).

The Beak of the Toucan

Why does the toucan ______ ______ such an enormous beak? The answer, we learned in August, may be that it uses it ______ ______ body temperature. Infrared measurement ______ ______ just before sleep shows that the bird’s long beak — which can grow to ______ ______ of its body size — gets hotter, ______ ______ the bird uses it in the presleep cooling process. At other times, as the external heat rises, so too does the heat of the toucan’s beak, while its core body heat stays the same.

Infrared measurement ______ ______ just before sleep shows that the bird’s long beak...

Read the text below. For questions choose the correct answer (A, B, C or D).

The Beak of the Toucan

Why does the toucan ______ ______ such an enormous beak? The answer, we learned in August, may be that it uses it ______ ______ body temperature. Infrared measurement ______ ______ just before sleep shows that the bird’s long beak — which can grow to ______ ______ of its body size — gets hotter, ______ ______ the bird uses it in the presleep cooling process. At other times, as the external heat rises, so too does the heat of the toucan’s beak, while its core body heat stays the same.

The answer, we learned in August, may be that it uses it ______ ______ body temperature.